Optimize climber mechanism settings

[nlaverdure]

The control code for the climber subsystem makes some simplifying assumptions throughout. These assumptions could be revisited if we need to more finely tune the mechanism.

• The max distance that we retract the arm could be different from the distance we deploy it
• The max velocity at which we can retract the arm could be different from the velocity that we deploy it
• The position control gains could (should?) be different from the velocity control gains