Could you please add the timestamps to Altitude or GroundTruth structs?

[ViktorYastrebov]

Is it possible to add timestamp from the

• mavlink_hil_state_quaternion_t
• mavlink_altitude_t
  original messages?

[julianoes]

I agree timestamps should be there and is an omission. In an idea world I would like to have proper timesync first and then timestamp everything int UTC but just the raw timestamps is probably a required first step.