Cleanup: move WM type registration into own files

Type registration is mostly boiler plate logic,
which can be separated from other API's.

source/blender/windowmanager/CMakeLists.txt

@@ -53,7 +53,6 @@ set(INC_SYS
 
 set(SRC
 	intern/wm.c
-	intern/wm_playanim.c
 	intern/wm_cursors.c
 	intern/wm_dragdrop.c
 	intern/wm_draw.c
@@ -65,12 +64,16 @@ set(SRC
 	intern/wm_init_exit.c
 	intern/wm_jobs.c
 	intern/wm_keymap.c
+	intern/wm_menu_type.c
 	intern/wm_operator_props.c
+	intern/wm_operator_type.c
 	intern/wm_operators.c
+	intern/wm_playanim.c
+	intern/wm_stereo.c
 	intern/wm_subwindow.c
 	intern/wm_tooltip.c
+	intern/wm_uilist_type.c
 	intern/wm_window.c
-	intern/wm_stereo.c
 
 	WM_api.h
 	WM_keymap.h