Add a user settable flag on device that resets on boot

[TheTripleV]

I'd like a way to determine if a device has been initialized by robot code (homed and zero'd in this case).

Timeline:

1. Robot is manually (human) homed
2. Robot breaker is turned on
3. TalonFX turns on
4. Robot code starts
5. Robot code zeros TalonFX
6. Robot code restarts (redeploy)
7. Robot code zeros TalonFX - want to eliminate this

To do this, TalonFX can have a flag (or fault) that

• can be set/cleared by phoenix6
• persists across robot code restarts
• automatically clears when the device is powered off

It would be good to have this on all TalonFX, Cancoder, Pigeon, and Candi devices.

[daltzctr]

This doesn't exactly solve your problem, but you could use the CustomParams configs for this. There's a few clever strategies I can see using some value entered into CustomParams.