QGC fails to take off the first time with "failed to arm" error

[kripper]

Describe the bug

QGC fails to take off the first time with "failed to arm" error

Workaround

Set mode in QGC to "Auto" and retry take off.

What we know

See: https://github.com/mavlink/MAVSDK/issues/1990

Every implementation is doing different arming checks and Rosetta probably is not passing them.

Feel free to add more messages to Rosetta to improve compatibility with more MAVLink implementations.

Steps To Reproduce

• Restart drone, RosettaDrone and QGC
• take off in QGC