Add Rich Presence

[GracieLovelight]

Implement Discord Rich Presence to the app which shows...

• The Homepage
• The Library
• The Settings Page
• Playing a game
• Watching a video
• It should check if the game or video is published by Arbitrium Studios through a hash or something.
• If the game or video IS NOT published by Arbitrium Studios, it should add a piece of superscript text saying that it is unofficial.

More will be added later on...