perf(App.vue): añadidas clases para las vistas y el Footer

src/App.vue

 <script setup>
 <script setup>
-  // import SignLayout from './components/SignLayout.vue';
-  // import Login from './views/Login.vue'
+import Footer from './components/Footer.vue';
 </script>
 </script>
 
 
 <template>
 <template>
-  <router-view></router-view>
+  <div class="d-flex flex-column min-vh-100">
+    <router-view></router-view>
+    <Footer></Footer>
+  </div>
 </template>
 </template>
-
-<style scoped></style>