Manual controls for mobility

[cartycrabber]

Mobility's sensor controlled functions (Drive Straight, Turn Degrees, and Drive Distance) need manual controls (meaning they don't use sensors, incase the sensors break). Things that need manual controls:

• Drive Straight (Gyro)
• Turn Degrees (Gyro)
• Drive Distance (Encoders)

Suggestions for how to implement "dumb mode"
Drive Straight - just set both motors to the same speed and hope it works
Turn Degrees - Time based. Measure the rotation speed of the robot, and then just divide the degrees you want to turn by the measured rotation speed (rotation speed should be stored in a constant so we can update it easily for the real robot)
Drive Distance - Time based. Measure the linear speed of the robot, then divide the distance you want to travel by the measured speed (again, store the speed in a constant for easy updating)

[cartycrabber]

Finished drive distance framework with 2731eab. Just need to fill the DISTANCES_TO_TIMES array for the real robot. It currently has working values for the anderson bot