Add ESC/motor status flags to ThrusterFeedback

[Jollerprutt]

I think it would make sense to add some status flags to this message.
I.e Armed/Enabled, Running, Overheating, Too cold, Can't turn, more?

@nilsbore @NiklasRolleberg Ideas? Feedback?

smarc_msgs/msg/ThrusterFeedback.msg

Lines 1 to 4 in e7c99e4

	std_msgs/Header header
	smarc_msgs/ThrusterRPM rpm
	float32 current
	float32 torque

[NiklasRolleberg]

I like the Enabled/Disabled flag. At the moment we don't get any information about the the temperature or status of the ESC so I don't know how we could use the other flags. Perhaps we could have some kind of error code instead which we could use in the future if we find a way to get such information.

[Jollerprutt]

Your ESC do have a temperature sensor mounted, so at some point we should get the temperature implemented.
But I guess the temperature and associated flags could go in a different message.
The Can't turn/propeller stuck flag could easily be monitored by a behavior tree, easier than checking last command, current rpm and that sufficient time has passed.