Add external package

geographic_info and angles and mavros_msgs

src/external/mavros_msgs/msg/ActuatorControl.msg

@@ -0,0 +1,16 @@
+# raw servo values for direct actuator controls
+#
+# about groups, mixing and channels:
+# https://pixhawk.org/dev/mixing
+
+# constant for mixer group
+uint8 PX4_MIX_FLIGHT_CONTROL = 0
+uint8 PX4_MIX_FLIGHT_CONTROL_VTOL_ALT = 1
+uint8 PX4_MIX_PAYLOAD = 2
+uint8 PX4_MIX_MANUAL_PASSTHROUGH = 3
+#uint8 PX4_MIX_FC_MC_VIRT = 4
+#uint8 PX4_MIX_FC_FW_VIRT = 5
+
+std_msgs/Header header
+uint8 group_mix
+float32[8] controls