[Desktop] Startup maintenance screen (#2253)

Co-authored-by: github-actions <github-actions@github.com>

src/router.ts

@@ -104,6 +104,12 @@ const router = createRouter({
           name: 'DesktopStartView',
           component: () => import('@/views/DesktopStartView.vue'),
           beforeEnter: guardElectronAccess
+        },
+        {
+          path: 'maintenance',
+          name: 'MaintenanceView',
+          component: () => import('@/views/MaintenanceView.vue'),
+          beforeEnter: guardElectronAccess
         }
       ]
     }