feat: v2 platform sdk

Author: Muhamad Ridwan

.openapi-generator/FILES

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+![Sendbird banner image](http://ww1.prweb.com/prfiles/2021/09/14/18371217/Sendbird_Logo_RGB_lg.png)
+
+# [Sendbird Java 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 Java library 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 channel automation and user management.
+
+# 🔥 Quick start
+
+```java
+
+import org.sendbird.client.ApiClient;
+import org.sendbird.client.ApiException;
+import org.sendbird.client.Configuration;
+import org.sendbird.client.api.UserApi;
+import org.openapitools.client.model.ListUsersResponse;
+
+
+class AppTest {
+    static class User {
+        UserApi apiInstance;
+        public User(ApiClient defaultClient){
+            apiInstance = new UserApi(defaultClient);
+        }
+        public void listUsers(){
+
+            try {
+                Integer limit = 56;
+                String activeMode = "activated";
+                Boolean showBot = true;
+                ListUsersResponse result = apiInstance.listUsers().limit(limit).activeMode(activeMode).execute();
+                System.out.println(result);
+
+            } catch (ApiException e) {
+                System.err.println("Exception when calling listUsers");
+                System.err.println("Status code: " + e.getCode());
+                System.err.println("Reason: " + e.getResponseBody());
+                System.err.println("Response headers: " + e.getResponseHeaders());
+                e.printStackTrace();
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+        String apiToken = "YOUR_API_TOKEN";
+        String applicationId = "YOUR_APP_ID_FROM_DASHBOARD";
+        ApiClient defaultClient = Configuration.getDefaultApiClient().addDefaultHeader("Api-Token", apiToken);
+        defaultClient.setBasePath("https://api-" + applicationId + ".sendbird.com");
+        User user = new User(defaultClient);
+        user.listUsers();
+    }
+}
+
+```
+
+# ⚒️ 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
+
+Building the API client library requires:
+1. Java 1.7+
+2. Maven (3.8.3+)/Gradle (7.2+)
+
+## ⚙️ Installation
+
+To install the API client library to your local Maven repository, simply execute:
+
+```shell
+mvn clean install
+```
+
+To deploy it to a remote Maven repository instead, configure the settings of the repository and execute:
+
+```shell
+mvn clean deploy
+```
+
+Refer to the [OSSRH Guide](http://central.sonatype.org/pages/ossrh-guide.html) for more information.
+
+### Maven users
+
+Add these dependency to your project's POM:
+
+```xml
+<repositories>
+    <repository>
+        <id>sendbird</id>
+        <url>https://repo.sendbird.com/public/maven</url>
+    </repository>
+</repositories>
+
+<dependencies>
+    <dependency>
+        <groupId>org.sendbird</groupId>
+        <artifactId>sendbird-platform-sdk</artifactId>
+        <version>1.0.23</version>
+    </dependency>
+</dependencies>
+```
+
+### Gradle users
+
+Add this dependency to your project's build file:
+
+```groovy
+
+dependencies {
+    implementation "org.sendbird:sendbird-platform-sdk:1.0.23"
+}
+
+allprojects {
+    repositories {
+        maven { url "https://repo.sendbird.com/public/maven" }
+    }
+}
+```
+
+
+
+
+
+# 🗃️ Documentation 
+All the documentation for this project lives in the /docs directory of this repo. 
+
+##### Helpful links
+
+|       | Documentation |
+| ----------- | ----------- |
+| Announcement   | [docs/AnnouncementApi.md](docs/AnnouncementApi.md)|
+| Application | [docs/ApplicationApi.md](docs/ApplicationApi.md)  |
+| Bot | [docs/BotApi.md](docs/BotApi.md)  |
+| GroupChannel | [docs/GroupChannelApi.md](docs/GroupChannelApi.md)  |
+| Message | [docs/MessageApi.md](docs/MessageApi.md)  |
+| OpenChannel | [docs/OpenChannelApi.md ](docs/OpenChannelApi.md)  |
+| User | [docs/UserApi.md](docs/UserApi.md)  |
+| Webhooks | [docs/WebhooksApi.md](docs/WebhooksApi.md)  |
+
+