Add state machine generation

[PChild]

This might be a bigger project but I think it would be neat to integrate the coppercore state machine and generation for some commonly used cases. Every subsystem will have idle, init, and tuning states, and some (most?) will have homing states (arms, elevators, turrets).

I think it would be nice to have state machine generation as a toggleable thing and then have generation of each common state also toggleable (maybe with sane default options - eg don't default to having a homing state for a flywheel) and then also have the ability for the user to specify additional state names that will be generated as stubs.

[PChild]

My (probably stupid) stretch goal idea for this would be an interactive GUI where the user can build a directed graph where nodes are states and edges are allowed transitions and support conditions. But yeah, very much stretch goal. Just generating stubs would be a good first step

[PChild]

Less stretch goal: generate mermaid diagrams to document each state machine. This could be a new function in rvc and a button in the extension that generates the diagram to document state transitions for each subsystem.