Desktop+ v.3.5.1 Beta

This is an update for the beta branch of Desktop+.

New:

• Reduced GPU memory usage during idle

Changed:

• Updated Steam Frame Controller bindings to match official VR Dashboard ones

Fixed:

• Fixed GPU memory leak on Desktop Duplication reset (occurs when switching resolutions, entering exclusive fullscreen, switching to secure desktop)

• Fixed Floating UI clipping into overlays in SteamVR 2.17.1 or newer

• Various other minor UI fixes and adjustments