qt/qml: Add 'Audio Player' toolbar and update presets
This MR adds a new profile for audio in the 'Customize interface' panel.
There's now a distinction between:
- The Video Player
- The Audio Player
- The Mini Player (the minified toolbar when browsing the MediaLibrary)
This MR introduces a generic NavigationWidget that encapsulate the DVD and Teletext components.
It specifies the proper 'Video' and 'Audio' presets:
The Menu and Back buttons are removed.
NOTE: !1692 (merged) should be merged first.
NOTE: The following wiki details the different presets: https://code.videolan.org/bunjee/vlc/-/wikis/presets
Edited by Benjamin Arnaud