Adding new message to MAVSDK: setpoint_accel

Hi all,

I am interested in adding functionality to MAVSDK (and eventually MAVSDK-Python).

This message exists in MAVROS to set desired accelerations. https://github.com/mavlink/mavros/blob/master/mavros/src/plugins/setpoint_accel.cpp

PIX4 implements it here I believe: https://github.com/PX4/Firmware/pull/4010

What is the process to add a new message to MAVSDK and does anyone have any advice?

Was able to add my accelerationNEDYaw to the proto file @ https://github.com/julianblanco/MAVSDK-Proto/blob/master/protos/offboard/offboard.proto
The ./other/tools/run_protoc.sh script was able to generate the files for MAVSDK-Python. Need to compare them to the message generated in mavros now. 90% sure it will fail but fingers crossed.