Add Web3Telegram documentation and integration guides

- Created new documentation for Web3Telegram including:
  - Overview and description of Web3Telegram functionality
  - Advanced configuration options for the SDK
  - Getting started guide for installation and setup
  - Integration guide detailing steps for using Web3Telegram
  - Methods documentation for fetchMyContacts, fetchUserContacts, and sendTelegram
  - Welcome page introducing iExec and its privacy-first toolkit

Author: Le-Caignec

src/documentation/build-iapp/guides/build-&-deploy.md

@@ -0,0 +1,362 @@
+---
+title: Create and Deploy an iApp
+description:
+  How to create a confidential iExec application and deploy it on iExec protocol
+---
+
+# Create and Deploy an iApp
+
+iApps (iExec Applications) are decentralized applications that run on the iExec
+network. They leverage confidential computing to ensure data privacy and
+security while providing scalable off-chain computation.
+
+## About iApp Generator
+
+Bootstrap TEE-compatible applications in minutes without any hardcoding skills,
+iApp Generator handles all the low-level complexity for you.
+
+- **Select your project mode & language** - Get started with either a basic or
+  advanced setup, depending on your experience with the iExec framework. You can
+  use Python or JavaScript—whichever you prefer!
+- **Develop your iApp effortlessly** - Write your application logic using
+  familiar programming languages while the generator handles all TEE-specific
+  configurations.
+- **Access to TEEs easily** - No need to dive into low-level requirements,
+  create iApps that connect to TEEs in minutes.
+- **Check and deploy iApps quickly** - iApp Generator checks that your iApp
+  complies with the iExec Framework and streamlines its deployment.
+
+## Prerequisites
+
+Before getting started, make sure you have the following installed:
+
+- **Node.js** (version 18 or higher) - [Download here](https://nodejs.org/)
+- **Docker** - [Download here](https://www.docker.com/get-started)
+- **Docker Hub account** - [Sign up here](https://hub.docker.com/) (required for
+  deployment)
+
+## Installation
+
+First, install the iApp Generator CLI tool using your preferred package manager:
+
+::: code-group
+
+```sh [npm]
+npm install -g @iexec/iapp
+```
+
+```sh [yarn]
+yarn global add @iexec/iapp
+```
+
+```sh [pnpm]
+pnpm add -g @iexec/iapp
+```
+
+```sh [bun]
+bun add -g @iexec/iapp
+```
+
+:::
+
+## Quick Start
+
+Once installed, you can create and deploy your first iApp. The CLI will guide
+you through an interactive setup process to configure your project name,
+programming language, and template:
+
+<CLIDemo
+  initialCommand="iapp init"
+  asciiText="iApp"
+  :steps="[
+    {
+      showAt: 2,
+      completeAt: 4,
+      question: 'What is your project name? (A folder with this name will be created)',
+      answer: 'hello-world',
+      showTyping: true,
+      isComplete: false
+    },
+    {
+      showAt: 4,
+      completeAt: 6,
+      question: 'Which language do you want to use?',
+      answer: 'JavaScript',
+      options: [
+        { label: 'JavaScript', selected: true },
+        { label: 'Python', selected: false }
+      ],
+      highlighted: false,
+      isComplete: false
+    },
+    {
+      showAt: 6,
+      completeAt: 8,
+      question: 'What kind of project do you want to init?',
+      answer: 'Hello World',
+      options: [
+        { label: 'Hello World - iapp quick start', selected: true },
+        { label: 'advanced', selected: false }
+      ],
+      highlighted: false,
+      isComplete: false
+    }
+  ]"
+  :completionStep="8"
+  :completionMessage="'Generating your iApp...'"
+  :completionItems="[
+    '📁 Created hello-world/',
+    '📄 Added package.json',
+    '🐳 Added Dockerfile',
+    '⚙️ Added iExec configuration'
+  ]"
+  :successMessage="'Your iApp is ready!'"
+/>
+
+After the interactive setup, continue with development and deployment:
+
+## Development and Testing
+
+Navigate to your project and run tests locally to simulate the TEE environment.
+The CLI will build a Docker image, run your app, and show you the results:
+
+<CLIDemo
+  initialCommand="iapp test"
+  :steps="[
+    {
+      showAt: 2,
+      question: 'No app secret is configured (from iapp.config.json)',
+      answer: '',
+      showTyping: false,
+      isComplete: true
+    },
+    {
+      showAt: 3,
+      question: 'App docker image built (sha256:9cc0de820aaaf8f86700a3ec4082fe69b9e9a48a117ebb0ade0d82d0879cbe41)',
+      answer: '',
+      showTyping: false,
+      isComplete: true
+    },
+    {
+      showAt: 4,
+      question: 'App docker image ran and exited successfully.',
+      answer: '',
+      showTyping: false,
+      isComplete: true
+    },
+    {
+      showAt: 5,
+      completeAt: 6,
+      question: 'Would you like to see the app logs? (12 lines)',
+      answer: 'no',
+      options: [
+        { label: 'yes', selected: false },
+        { label: 'no', selected: true }
+      ],
+      highlighted: false,
+      showTyping: false,
+      isComplete: false
+    },
+    {
+      showAt: 7,
+      question: 'Checked app output',
+      answer: '',
+      showTyping: false,
+      isComplete: true
+    },
+    {
+      showAt: 8,
+      completeAt: 10,
+      question: 'Would you like to see the result? (View ./output/)',
+      answer: 'yes',
+      options: [
+        { label: 'yes', selected: true },
+        { label: 'no', selected: false }
+      ],
+      highlighted: false,
+      showTyping: false,
+      isComplete: false
+    }
+  ]"
+  :completionStep="11"
+  :completionMessage="'📁 output directory content:'"
+  :completionItems="[
+    '└ computed.json',
+    '└ result.txt'
+  ]"
+  :successMessage="'hello world'"
+  :autoRestart="true"
+/>
+
+## Deployment
+
+After your tests pass and the package is built, you can deploy your iApp to a
+supported network. During deployment, you'll enter your DockerHub credentials,
+specify your app version, and push both standard and TEE-compatible images:
+
+<CLIDemo
+  initialCommand="iapp deploy"
+  asciiText="Deploy"
+  :steps="[
+    {
+      showAt: 2,
+      question: 'Using chain bellecour',
+      answer: '',
+      showTyping: false,
+      isComplete: true
+    },
+    {
+      showAt: 3,
+      question: 'Using saved walletPrivateKey (from iapp.config.json)',
+      answer: '',
+      showTyping: false,
+      isComplete: true
+    },
+    {
+      showAt: 4,
+      completeAt: 6,
+      question: 'What is your username on DockerHub? (It will be used to properly tag the Docker image)',
+      answer: 'bob',
+      showTyping: true,
+      isComplete: false
+    },
+    {
+      showAt: 6,
+      completeAt: 8,
+      question: 'What is your DockerHub access token?',
+      answer: '**********************',
+      showTyping: true,
+      isComplete: false
+    },
+    {
+      showAt: 8,
+      completeAt: 10,
+      question: 'What is the version of your iApp?',
+      answer: '0.0.1',
+      showTyping: true,
+      isComplete: false
+    },
+    {
+      showAt: 10,
+      question: 'Docker image built (sha256:a53fc4c480f482c384a13266ea2cb6cc5572733c866c44a5f604f4bfab3a744a) and tagged bob/hello-world:0.0.1',
+      answer: '',
+      showTyping: false,
+      isComplete: true
+    },
+    {
+      showAt: 11,
+      question: 'Pushed image bob/hello-world:0.0.1 on dockerhub',
+      answer: '',
+      showTyping: false,
+      isComplete: true
+    },
+    {
+      showAt: 12,
+      question: 'Pushed TEE image bob/hello-world:0.0.1-tee-scone-5.9.1-v16-debug-ce3a01d9c5d7 on dockerhub',
+      answer: '',
+      showTyping: false,
+      isComplete: true
+    },
+    {
+      showAt: 13,
+      question: 'TEE app deployed',
+      answer: '',
+      showTyping: false,
+      isComplete: true
+    }
+  ]"
+  :completionStep="14"
+  :completionMessage="'Deployment of your iApp completed successfully:'"
+  :completionItems="[
+    '└ Docker image: bob/hello-world:0.0.1-tee-scone-5.9.1-v16-debug-ce3a01d9c5d7',
+    '└ iApp address: 0x1f80DCebc2EAAff0Db7156413C43B7e88D189923'
+  ]"
+  :successMessage="'Run iapp run 0x1f80DCebc2EAAff0Db7156413C43B7e88D189923 to execute your iApp on an iExec TEE worker'"
+  :autoRestart="true"
+/>
+
+## Real Examples
+
+Here are some real-world examples of iApps to help you understand how they work
+in practice.
+
+### Email Notification iApp
+
+This iApp lets you send updates to your contacts without ever seeing their email
+addresses, privacy is preserved by design.
+
+::: code-group
+
+```js [Node.js]
+/* User runs: "Send updates to my contacts about my project" */
+const contacts = loadProtectedData(); // User's protected contact list
+contacts.forEach((contact) => {
+  sendEmail(contact, projectUpdateMessage);
+});
+// → Emails sent directly, you never see the addresses
+```
+
+```python [Python]
+# User runs: "Send updates to my contacts about my project"
+contacts = load_protecteddata()  # User's protected contact list
+for contact in contacts:
+   send_email(contact, project_update_message)
+# → Emails sent directly, you never see the addresses
+```
+
+:::
+
+### Oracle Update iApp
+
+This iApp securely updates a price oracle using private trading data, ensuring
+sensitive information stays confidential.
+
+::: code-group
+
+```js [Node.js]
+// User runs: "Update price oracle with my private trading data"
+const tradingData = loadProtectedData(); // User's protected trading history
+const averagePrice = calculateWeightedAverage(tradingData);
+updateOracleContract(averagePrice);
+// → Oracle updated with real data, trading history stays private
+```
+
+```python [Python]
+# User runs: "Update price oracle with my private trading data"
+trading_data = load_protecteddata()  # User's protected trading history
+average_price = calculate_weighted_average(trading_data)
+update_oracle_contract(average_price)
+# → Oracle updated with real data, trading history stays private
+```
+
+:::
+
+### Automated Transactions iApp
+
+This iApp automates monthly payments using protected payment details, so
+financial information remains private.
+
+::: code-group
+
+```js [Node.js]
+// User runs: "Automate payments every month"
+const paymentInfo = loadProtectedData(); // User's payment details
+for (let month = 0; month < 12; month++) {
+  processPayment(paymentInfo);
+}
+// → Payments processed, payment details stay private
+```
+
+```python [Python]
+# User runs: "Automate payments every month"
+payment_info = load_protecteddata()  # User's payment details
+for month in range(12):
+   process_payment(payment_info)
+# → Payments processed, payment details stay private
+```
+
+:::
+
+<script setup>
+import CLIDemo from '@/components/CLIDemo.vue';
+</script>