request elevation menu

Signed-off-by: 21pages <pages21@163.com>

flutter/lib/desktop/widgets/remote_menubar.dart

@@ -598,6 +598,7 @@ class _ControlMenu extends StatelessWidget {
         hoverColor: _MenubarTheme.hoverBlueColor,
         ffi: ffi,
         menuChildren: [
+          requestElevation(),
           osPassword(),
           transferFile(context),
           tcpTunneling(context),
@@ -611,6 +612,15 @@ class _ControlMenu extends StatelessWidget {
         ]);
   }
 
+  requestElevation() {
+    final visible = ffi.elevationModel.showRequestMenu;
+    if (!visible) return Offstage();
+    return _MenuItemButton(
+        child: Text(translate('Request Elevation')),
+        ffi: ffi,
+        onPressed: () => showRequestElevationDialog(id, ffi.dialogManager));
+  }
+
   osPassword() {
     return _MenuItemButton(
         child: Text(translate('OS Password')),