feat:#60 added switch button (not working)

frontend/src/App.vue

@@ -1,10 +1,12 @@
 <script lang="ts" setup>
 import MenuBar from "./components/MenuBar.vue";
+import { RouterView } from "vue-router";
 </script>
 
 <template>
-  <MenuBar />
-  <router-view></router-view>
+<MenuBar />
+<RouterView />
+
 </template>
 
 <style scoped></style>