AudioPlayerView: Add sliders and gestures
This merge request adds:
- The brightness and volume sliders to the Audio Player's View to be able to adjust it without going to the control center.
- The status label support to display information about the playback status and updates (such as the seek duration for example).
This merge request also brings the addition of:
- A pan gesture to control the brightness and volume sliders of the Audio Player's view.
- A tap gesture recognizer to play/pause the audio playback by tapping the screen with two fingers.
- A pinch gesture in order to minimize the Audio Player without pressing the close button.
- A swipe gesture to perform the seek backwards/forwards when swiping left/right.