Movement Overhaul

I have completely changed how the movement works by altering it so you can no longer sprint midair, there is no longer any air control and walking up objects is a lot easier (e.c.t the stairs on level1).

This has been done in response to comments on how it doesn't feel right when you move around and it could be made more realistic by not allowing the ability to sprint midair and jump around certain obstacles, rendering them useless.