Walking Backwards Controller

New:
-when facing direction is past a certain angle from the movement direction, will use new logic of 'walking backwards' to make the legs still face forward, but act in an appropriate angle
-animations are reversed as well, slight detail but it does seem to make a difference
-added in debug lines to see where you're moving and looking

Still to work on:
-debug lines to see the facing direction of the legs (to make sure all scenarios work)
-fixing issue with walking up/down and trying to calculate leg direction