Exposed MetaWindowType so it can be used by compositor backends.

meta_window_get_type:
meta_window_get_type_atom:
Accessors for window type/type atom.

src/core/window.c

@@ -8156,3 +8156,15 @@ meta_window_get_xwindow (MetaWindow *window)
 {
   return window->xwindow;
 }
+
+MetaWindowType
+meta_window_get_type (MetaWindow *window)
+{
+  return window->type;
+}
+
+Atom
+meta_window_get_type_atom (MetaWindow *window)
+{
+  return window->type_atom;
+}