Add enhanced media controls and social sharing features.
* **Enhanced Media Controls:**
- Add volume control slider to `PlayerControls` widget in `lib/modules/player/player_controls.dart`.
- Implement keyboard shortcuts for media controls (play/pause, next/previous track, volume up/down) in `PlayerControls` widget.
- Add "lyrics" button to `PlayerView` widget in `lib/modules/player/player.dart`.
* **Social Sharing Features:**
- Add feature to share the currently playing track on social media platforms in `lib/components/track_tile/track_options.dart`.
- Add share button to `TrackPresentationTopSection` widget in `lib/components/track_presentation/presentation_top.dart`.
* **Settings:**
- Add dark mode toggle in the settings page in `lib/pages/settings/settings.dart`.
* **CI Configuration:**
- Add `.ci.yaml` file for continuous integration configuration.
