Build 6

This update is like the last one but even moreso. More work on UI and a ton of work on the main menu. Still avoiding working on the gameplay. But at this point I'm hoping development starts moving there next.

- UI update.
- Added fun colorschemes.
- Added full controller support.
- Removed full keyboard/mouse support.
- Added Options menu.
- Prototype sliding pause menu.
- Sign is still broken.