Improve media controller service

[StaehliJ]

Pull request

Description

The goal of this PR is to improve the usage of MediaSession and MediaController. It allows to have access to custom Pillarbox features when using MediaSession and MediaController.

Changes made

• Add PillarboxPlayer interface for all kind of player in Pillarbox players.
• AddPillarboxExoPlayer for ExoPlayer implementation.
• Add PillarboxMediaController for MediaController implementation connected to a PillarboxMediaSession.
• Add PillarboxMediaBrowser for MediaBrowser implementation connected to a PillarboxMediaLibrarySession.

Checklist

• Your branch has been rebased onto the main branch.
• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).
• All pull request status checks pass.

[github-actions]

Code Coverage

Overall Project	46.8% -17.26%	🟢
Files changed	17.52%	🟢

Module	Coverage
:pillarbox-core-business	85.02%	🟢
:pillarbox-player	46.77% -40.03%	🟢

Files

Module	File	Coverage
:pillarbox-core-business	DefaultPillarbox.kt	57.84%	🟢
:pillarbox-player	PillarboxSessionCommands.kt	100%	🟢
	PlayerSessionState.kt	100%	🟢
	Player.kt	90.74% -9.26%	🟢
	PillarboxExoPlayer.kt	77.16% -22.84%	🟢
	PillarboxMediaLibrarySession.kt	0%	🟢
	PillarboxMediaSessionService.kt	0% -53.66%	🟢
	PillarboxMediaController.kt	0%	🟢
	PillarboxMediaLibraryService.kt	0% -51.69%	🟢
	PillarboxMediaBrowser.kt	0%	🟢
	PillarboxMediaSession.kt	0%	🟢
	PlaybackService.kt	0%	🟢
	PillarboxPlayer.kt	0%	🟢