Feature Request: Better error message for dual_carriage

[lukeslaboratory]

Currently there isn't a "smart" error when using dual_carriage in corexy mode - it responds with the below:

Ideally, this would provide a more useful error message like "dual_carriage not compatible with currently selected kinematics system" prompting the user (like dum-dum me) to make sure they're trying to use it correctly.

[lraithel15133]

Please test this when you have the time @lukeslaboratory #146

[lraithel15133]

#146 merged a fix/enhancement