added function to change drone flight mode (#32)

mavlink/modules/flight_controller.py

@@ -222,3 +222,15 @@ def move_to_position(self, position: drone_odometry.DronePosition) -> bool:
  except dronekit.APIException as e:
  print(f"ERROR in move_to_position() method: {e}")
  return False
+
+ def set_flight_mode(self, mode: str) -> bool:
+ """
+ Changes the flight mode of the drone.
+ https://ardupilot.org/copter/docs/flight-modes.html
+ """
+ try:
+ self.drone.mode = dronekit.VehicleMode(mode)
+ except KeyError:
+ print("ERROR: an unsupported flight mode is set by dronekit.VehicleMode()")
+ return False
+ return True