feat: screenshot app improvement, WIndow Server supports full-screen overlay, Disks app UI improvements

template/sysroot/include/gui/standalone.hpp

@@ -70,6 +70,11 @@ struct WsWindow {
             montauk::win_setcursor(id, cursor);
     }
 
+    void set_flags(uint32_t flags) const {
+        if (id >= 0)
+            montauk::win_setflags(id, flags);
+    }
+
     void destroy() {
         if (id >= 0)
             montauk::win_destroy(id);