Adds a new Difficulty Setting which changes how long each "second" lasts in a level. Off by default, but when on it uses full seconds instead of 0.4 seconds like in SMM2.
NOTE: The translations will need to be checked properly.
- Adjusted previous update to use Godot Editor Metadata
- Applied Resource Pack changes to Ach Unlock Popup (I assume) and Container
- Applied Resource Pack changes to Character Select Spotlight
- Applied Resource Pack changes to Level Containers (Icon, Difficulty Stars, and Campaign)
- Fixed Disclaimer Screen not playing Sound Effects loaded from the Resource Pack
- Fixed Quit Dialog not playing Beep.wav loaded from Resource Packs
- Fixed the Campaign Icons not loading the Resource Pack textures (in fairness the only icon applicable is the Custom Levels one)
