Add uorb messages for the airflow angles

msg/CMakeLists.txt

@@ -39,6 +39,8 @@ set(msg_files
 	actuator_controls.msg
 	actuator_outputs.msg
 	adc_report.msg
+	airflow_aoa.msg
+	airflow_slip.msg
 	airspeed.msg
 	airspeed_validated.msg
 	airspeed_wind.msg

msg/airflow_aoa.msg

@@ -0,0 +1,3 @@
+uint64 timestamp		# time since system start (microseconds)
+float32 aoa_rad # angle of attack in radians
+bool valid # true if measurement is within sensor/calibration range, false otherwise

msg/airflow_slip.msg

@@ -0,0 +1,3 @@
+uint64 timestamp		# time since system start (microseconds)
+float32 slip_rad # sideslip angle in radians
+bool valid # true if measurement is within sensor/calibration range, false otherwise