[feat] AUX-N simulator

For our KUHN seeder I want to control the Start / Stop buttons with AOG Hydlift.

The library allows us to send CAN messages.
I need to check if the SA matters. (The target VT address definitely matters.)

Not sure if it's up to the spec to have 2 joysticks for the same purpose but maybe we could hack some systems this way.


Systems without the SC unlock could still support AUX-N section control.