ENH: use system menu on mac platform

Change-Id: Ia0e0bf42232d51cd08216811fdc6633527b3eb97
Signed-off-by: chunmao.guo <chunmao.guo@bambulab.com>

src/slic3r/GUI/GUI_App.hpp

@@ -100,6 +100,11 @@ enum ConfigMenuIDs {
     ConfigMenuCnt,
 };
 
+enum BambuStudioMenuIDs {
+  BambuStudioMenuAbout,
+  BambuStudioMenuPreferences,
+};
+
 enum CameraMenuIDs {
     wxID_CAMERA_PERSPECTIVE,
     wxID_CAMERA_ORTHOGONAL,