[REFACTOR] - Refactor audio player service architecture

[atlet99]

Extract player logic into separate manager classes for better maintainability and separation of concerns.

• Extract playback control logic to PlaybackController
• Extract position management to PositionManager
• Extract player state handling to PlayerStateHelper
• Extract metadata management to MetadataManager
• Extract notification handling to NotificationHelper
• Extract playlist management to PlaylistManager
• Extract sleep timer logic to SleepTimerManager
• Extract unload logic to UnloadManager
• Add FileDurationDatabaseService for caching file durations
• Add chapterNumber support from native player
• Improve error handling by using Object instead of Exception
• Update version to 1.2.7+2;