Edited ResetCatapult and Renamed

Renamed variables to reduce confusion, such as differentiating between
Winch and Catapult (Motor vs. Encoder). Renamed shoot to pinch in order
to clarify what the Solenoid is doing. Wrote functionality for
ResetCatapult command. The command now rewinds the catapult, activates
the pinch, and unwinds the catapult to prepare for firing. Still need to
determine certain variable values like Unwind Amount, and time to wind
and unwind.
NOTE: Need to have getCatapultPosition() return the Catapult arm encoder
value.