Added Launcher Commands

+ ActivateHardStop: Actuates pneumatic piston, stopping the ball
+ PushBall: Actuates door motors to push the ball through the backside
+ RemoveHardStop: Actuates pneumatic piston, allowing the ball to move
+ UpdatePressure: Fills the pneumatic compressors
+ ShootBall: Command group that shoots the ball
+ Constants/variables for the motors/piston (solenoid)
* TODO: Find time it takes to shoot a ball
* TODO: Find the speed of door motors
* TODO: Create a pressure management system