Moved Normal and NormalStamped msgs from homer_openpose_msgs here

CMakeLists.txt

@@ -62,6 +62,9 @@ add_message_files(
    Detection2D.msg
    Detections2D.msg
    YoloRGBDFrame.msg
+
+   Normal.msg
+   NormalStamped.msg
 )
 
 ## Generate services in the 'srv' folder

msg/Normal.msg

+geometry_msgs/Point origin
+geometry_msgs/Vector3 direction 

msg/NormalStamped.msg

+std_msgs/Header header
+homer_msgs/Normal normal