New Main Menu wip. You can load your own background as long as it's 16x9 and it will save. Theres a slider to lighten/darken it.

I removed the animated stuff since it'll have to be completely redone, but animated backgrounds from mp4s should be entirely possible.

I also want to give certain stats on the main menu, like overall playtime, round complete, Fapland's completed, etc. Maybe I'll add in an XP system with leveling just for flair. Those are always fun.