System : Move all command features into separate library

When compiling the complete application, the large number of files causes the input file for a Ninja build (text response file) to become too large on some configurations. Move command features into a separate library to reduce the total file count per project/library.

ApplicationCode/Commands/ToggleCommands/CMakeLists_files.cmake

@@ -17,11 +17,11 @@ ${CMAKE_CURRENT_LIST_DIR}/RicToggleItemsOnOthersOffFeature.cpp
 ${CMAKE_CURRENT_LIST_DIR}/RicCollapseSiblingsFeature.cpp
 )
 
-list(APPEND CODE_HEADER_FILES
+list(APPEND COMMAND_CODE_HEADER_FILES
 ${SOURCE_GROUP_HEADER_FILES}
 )
 
-list(APPEND CODE_SOURCE_FILES
+list(APPEND COMMAND_CODE_SOURCE_FILES
 ${SOURCE_GROUP_SOURCE_FILES}
 )