feat(frontend): main page

frontend/app/app.vue

@@ -1,5 +1,25 @@
 <template>
-  <div>
-    <h1>Nuxt works!</h1>
-  </div>
+  <UApp :locale="locales[locale]">
+    <AppNavbar />
+    <UMain>
+      <NuxtLayout>
+        <NuxtPage />
+      </NuxtLayout>
+    </UMain>
+    <AppFooter />
+  </UApp>
 </template>
+
+<script setup lang="ts">
+import * as locales from '@nuxt/ui/locale';
+const { locale } = useI18n();
+const lang = computed(() => locales[locale.value].code);
+const dir = computed(() => locales[locale.value].dir);
+
+useHead({
+  htmlAttrs: {
+    dir,
+    lang,
+  },
+});
+</script>