media3-cast-integration

1## Prerequisites
2 
3- Jetpack Media3 version must be `>= 1.9.0`. Cast isn't available in lower versions.
4 
5## Glossary
6 
7- **`CastPlayer`** : Media3 `Player` that controls playback on both local and remote Cast devices.
8- **`RemoteCastPlayer`** : Media3 `Player` that communicates with a Cast receiver, only used for remote playback.
9- **Google Cast SDK**: Legacy casting SDK in maintenance mode, superseded by Jetpack Media3.
10- **`OptionsProvider`** : Interface providing configuration options to initialize GMS `CastContext`.
11 
12## Common guidelines
13 
14- Legacy [Google Cast SDK](https://developers.google.com/cast) is in maintenance mode.
15- For new Cast setups:
16  - You must use [Jetpack Media3 Cast](references/android/media/media3/cast/index.md).
17  - You mustn't use legacy Cast SDK unless explicitly requested.
18 
19## Step 1: Set up dependencies
20 
21To complete this step, you **MUST** ensure the following:
22 
23- In the app-level build file, declare the `media3-cast` dependency version
24  1.9.0 or higher.
25 
26      implementation("androidx.media3:media3-cast:1.11.1")
27 
28- Ensure required Media3 dependencies are present:
29 
30  - `androidx.media3:media3-exoplayer`
31  - `androidx.media3:media3-session`
32  - `androidx.media3:media3-ui-compose`
33- If the application uses legacy Views, add `media3-ui`.
34 
35- Enforce the same versions across all Media3 dependencies.
36 
37- Use configurations in "Add build dependencies" section of [Getting started
38…