QoL update!

Time for some QoL updates!

Levels:
- Fixed colliders on tracks (rocks, ramps, tunnels, that one specific melted snowman...)
- Fixed floating fences and rocks on "Hard Track"
- Fixed static gifts (those around the track, that should be unpickable) - now you really can't pick them up!
- Added missing "Victory" and "Failure" screens. They're triggered, when track time is beaten or not.

Music
- Fixed "oof" sound, which was played every frame, when SFX Volume was adjusted
- Fixed "oof" sound playing, when player starts game or exits to Main Menu

Loading
- Added progress bar and "Press Space to Continue" to Loading Screen, which means - you can look at the controls for more, than 5 seconds 

Gameplay
- Fixed sleigh stats on "Easy Track" - now they should drive like on "Hard Track"
- Sleighs now "unflip" themselfs

More updates soon, stay tuned 😎