Add effector branching to spinningBodyNDOF

[andrewmorell]

Describe your use case
Effector branching is being merged into develop for state effectors spinningBody1DOF & spinningBody2DOF. Now want to add this capability to spinningBodyNDOF as the next state effector to be branched off of.

Describe alternatives solutions you've considered
Simply expanding branching capabilities to motion platform state effectors.

Additional context