[ARP] Added stepper and set coordinates commands

mavlink_lib.py

mavlink_lib/lyra/lyra.h

mavlink_lib/lyra/mavlink.h

...ink_lib/lyra/mavlink_msg_set_antenna_coordinates_arp_tc.h

mavlink_lib/lyra/mavlink_msg_set_rocket_coordinates_arp_tc.h

mavlink_lib/lyra/mavlink_msg_set_stepper_angle_tc.h

mavlink_lib/lyra/mavlink_msg_set_stepper_steps_tc.h

mavlink_lib/lyra/testsuite.h

mavlink_lib/lyra/version.h

message_definitions/lyra.xml