VideoPlayerViewController: Add play as audio feature

This merge request adds:

• A play as audio feature to allow users to play video files as audio files.

When enabled, the video player will update the interface to showcase a thumbnail of the current state of the media.

The minimized player will also follow the same behavior as a if an audio file was being played.

Screen recordings

Play_as_audio_-_1 Play_as_audio_-_2

Closes #554 (closed)