Feature Request: Native Device Audio Player Support for expo-av

Currently, expo-av does not integrate with the native device audio player UI — the one shown on the lock screen and in the system media controls (like the control center or notification shade). This significantly limits the user experience for audio-based apps built with Expo, as users can't control playback when the app is backgrounded or the phone is locked.

Requested Feature:

Add support for integrating with the native media player UI on iOS and Android. This includes:

Displaying audio playback controls on the lock screen and in the system media tray

Displaying track information (title, artist, etc.)

Handling play/pause/seek/skip actions from those controls

Keeping the playback alive when the app is backgrounded

Use Case:

Apps that play podcasts, music, or audiobooks require background audio playback and system media control integration to meet user expectations and OS standards.