Added a settings menu (Works only ingame, not on menu screen since I haven't scripted playerprefs yet)

Shaders now work in build, previously they only worked inside the Unity editor. (Press M for a secret shader effect) 

UI SCALING DOES NOT WORK PROPERLY, SORRY! 

If you play windowed and then resize the game by dragging from the corners,  the UI freaks out. Will fix it at some point.