Implement PID Controller for autoRotate()

[maxchen132]

Use PID to rotate the claw more reliably in the autoRotate() function in ClawRotationSubsystem.java.

https://docs.wpilib.org/en/stable/docs/software/advanced-controls/controllers/pidcontroller.html

Here is documentation on PID and the PIDController class in WPILIB, which is the most easiest way of implementing this.

[maxchen132]

Closed because things got confusing