Rework Includes during the uorb message generation

each CMakeFile that generates parameters should add its path to the msg_include_path
which will then be handled in the px_generate_uorb_topic_files.py

msg/CMakeLists.txt

@@ -129,10 +129,15 @@ set(msg_file_names
 
 # Get absolute paths
 set(msg_files)
+set(msg_include_paths)
+
 foreach(msg_file ${msg_file_names})
 	list(APPEND msg_files ${CMAKE_CURRENT_SOURCE_DIR}/${msg_file})
 endforeach()
 
+list(APPEND msg_include_paths ${CMAKE_CURRENT_SOURCE_DIR})
+set(msg_include_paths ${msg_include_paths} PARENT_SCOPE)
+
 set(msg_files ${msg_files} PARENT_SCOPE)
 
 # vim: set noet ft=cmake fenc=utf-8 ff=unix :