When we use a gimbal connected via "RC", so PWM via the Aux channels, we
need to set the gimbal_device_id to 1 as per the protocol.
This was missing for GIMBAL_DEVICE_ATTITUDE_STATUS, so I added that, and
fixed the name of that variable while at it.
- update all msgs to be directly compatible with ROS2
- microdds_client improvements
- timesync
- reduced code size
- add to most default builds if we can afford it
- lots of other little changes
- purge fastrtps (I tried to save this multiple times, but kept hitting roadblocks)
