feat: v2 platform sdk

Author: Muhamad Ridwan

.openapi-generator/FILES

@@ -0,0 +1,89 @@
+![Sendbird banner image](http://ww1.prweb.com/prfiles/2021/09/14/18371217/Sendbird_Logo_RGB_lg.png)
+
+# [Sendbird PHP Platform SDK](https://sendbird.com/docs/chat/v3/platform-api/getting-started/prepare-to-use-api)
+
+[![link to docs](https://img.shields.io/badge/SDK-docs-green)](/docs)
+This is a SDK written for PHP  that makes talking to the [Sendbird Platform API](https://sendbird.com/docs/chat/v3/platform-api/getting-started/prepare-to-use-api) easier.
+With this library you can extend your Sendbird integration to include advanced features like message-, and channel automation, user management, create user authentication tokens, and create bots.
+
+# 🔥 Quick start
+
+```php  
+<?php
+require_once('/PATH_TO/sendbird-platform-sdk-php/vendor/autoload.php');
+$config = \Sendbird\Configuration::getDefaultConfiguration();
+
+$api_token = 'MASTER_API_TOKEN_FROM_DASHBOARD';
+$config->setHost("API_REQUEST_URL_FROM_DASHBOARD");
+
+$apiInstance = new Sendbird\Api\UserApi(
+    new GuzzleHttp\Client(),
+    $config
+);
+
+$list_users_params['api_token'] = $api_token;
+
+try {
+    $result = $apiInstance->listUsers($list_users_params);
+    print_r($result);
+} catch (Exception $e) {
+    echo 'Exception when calling listUsers: ', $e->getMessage(), PHP_EOL;
+}
+
+```
+
+# ⚠️ Warnings
+
+This package is not currently published. Please see  the Local development section for installation instructions.
+
+# ⚒️ Prerequisite
+
+In order to make requests with this SDK you will need you master API token. This can be found through the [Sendbird dashboard](https://dashboard.sendbird.com/).  Each app you create in Sendbird has its own master api token. These tokens can be found in Settings > Application > General.
+![how to find you api token](https://i.imgur.com/0YMKtpX.png)
+
+# 💻 Requirements
+
+You will need [PHP](https://www.php.net/) installed. This has been developed and tested with PHP 7.3 and later.
+
+### Composer
+
+To install the bindings via [Composer](https://getcomposer.org/), add the following to `composer.json`:
+
+```json
+{
+  "repositories": [
+    {
+      "type": "vcs",
+      "url": "https://github.com/sendbird/sendbird-platform-sdk-php.git"
+    }
+  ],
+  "require": {
+    "sendbird/sendbird-platform-sdk-php": "*@dev"
+  }
+}
+```
+
+Then run `composer install`
+
+### Manual Installation
+
+1. Clone this repository, run `composer install` in the `sendbird-platform-sdk` directory
+2. Include `autoload.php` in your project
+
+```php
+<?php
+require_once('/path/to/sendbird-platform-sdk/vendor/autoload.php');
+```
+
+##### Helpful links
+
+|       | Documentation |
+| ----------- | ----------- |
+| Announcement   | [docs/Api/AnnouncementApi.md](docs/Api/AnnouncementApi.md)|
+| Application | [docs/Api/ApplicationApi.md](docs/Api/ApplicationApi.md)  |
+| Bot | [docs/Api/BotApi.md](docs/Api/BotApi.md)  |
+| GroupChannel | [docs/Api/GroupChannelApi.md](docs/Api/GroupChannelApi.md)  |
+| OpenChannel | [docs/Api/OpenChannelApi.md ](docs/Api/OpenChannelApi.md)  |
+| Message | [docs/Api/MessageApi.md](docs/Api/MessageApi.md)  |
+| User | [docs/Api/UserApi.md](docs/Api/UserApi.md)  |
+| Webhooks | [docs/Api/WebhooksApi.md](docs/Api/WebhooksApi.md)  |