Snake 3D UPGRADE!

Crashes:

• removed sound library dependecy
• on sound failed to start, game doesnt crash

Visuals:

• better background gradient
• shadow size based on shadow casters  height
• better colours
• anti aliasing

Gameplay:

• different game speeds including a pause option
• better menu experience

Performance:

• better snake handling (cause i did tupid the first time) (its now O(1) instead of  O(n^3))
• apple spawn is faster (again i did it tupid the first time) (its now O(n) instead of random)