* Add Quick Settings Tile service for VPN control
* Fix binding state management in NetbirdTileService
* Handle bindService failure in NetbirdTileService and reset pendingClick flag
* Enhance VPN service intent handling in NetbirdTileService
* fix: Ensure VPN service starts as foreground and adapt activity launch for Android 14+.
* Fix: Ensure `updateTile` calls are executed on the main thread using a Handler.
* feat: Explicitly start VPN service as foreground before running the engine.
