Subclass CTRE's motor controllers classes

[katzuv]

Currently we have two "wrappers" for CTRE's motor controllers classes:

• unit conversions
• configuration groups

I recommend sub-classing the aforementioned classes and integrate those two features. That way you have to call those everywhere in your code. As time goes by, we can expand our classes and add more features as we see fit.

Note you'll probably need to subclass the three classes we use (VictorSPX, TalonSRX, TalonFX). I don't think this is something that could be done by subclassing BaseMotorController.