Level Select Improvements

I've added new updates to the level select screen in Midnight Muffin Delivery Service!  Now when you complete a level, you can see the path being built to the next level(s)!  Here's what that looks like:

When you try to move in a direction that isn't allowed, a short animation now plays to show that the input has been acknowledged, but won't move you anywhere.  Sound effects have also been added to accompany each new animation.  While testing these updates, I realized that I couldn't reverse my direction while traveling down a path, so I've included that functionality too.

And I happened to find a tiny visual bug with the scoreboard UI that displays after completing a level.  After a lot of troubleshooting, I figured out the source of the error, and it should be fixed now!