Add docs for generating developer token (#1002)

Author: skydoves

docusaurus/docs/Android/07-playground/03-devtoken.mdx

@@ -0,0 +1,41 @@
+---
+title: Stream Dev Token
+description: How to bypass authentication by using dev token
+---
+
+When initializing the Stream Video SDK, a user token is required for authentication. This user token (or access token) contains the security credentials for a login session and uniquely identifies the user. Typically, these tokens should be generated by a secure backend server.
+
+However, there can be scenarios, such as when creating a demonstration application with the Stream Video SDK, where setting up a backend server solely for generating user tokens may not be suitable. To accommodate such situations, the Stream Video SDK provides a convenient method for generating a developer token directly on the client side, eliminating the need for backend complications.
+
+If you want to use devloper tokens for your project, you can follow the instructions below.
+
+1. **Go to the [Dashboard](https://dashboard.getstream.io/)** and select your application.
+
+2. In the **Overview** menu, you can find the **Authentication** category by scrolling to the middle of the page.
+
+3. Toggle on the **Disable Auth Checks** option and **click the Submit** button like the image below.
+
+![Authentication](../assets/dashboard_authentication.png)
+
+4. To obtain the developer token, you can simply use the `StreamVideo.devToken()` method, as shown in the following example:
+
+```kotlin
+val userId = "my_user_id"
+StreamVideoBuilder(
+   context = context,
+   apiKey = BuildConfig.STREAM_API_KEY,
+   token = StreamVideo.devToken(userId), // here!
+   user = User(
+     id = userId,
+     name = "stream",
+     image = "http://placekitten.com/200/300",
+     role = "admin"
+   )
+ ).build()
+```
+
+You can now utilize the developer token within your development environment for user authentication purposes.
+
+:::note
+It's important to remember that the developer token should not be used in production-level projects.
+:::