feat(front): implement app layout and integrate Serwist for service registration

front/app.vue

@@ -1,6 +1,14 @@
+<!-- app.vue -->
+<script setup lang="ts">
+// @ts-check
+const { $serwist } = useNuxtApp();
+$serwist?.addEventListener("installed", () => {
+  console.log("Serwist installed!");
+});
+void $serwist?.register({ immediate: true });
+</script>
 <template>
-  <div>
-    <NuxtRouteAnnouncer />
-    <NuxtWelcome />
-  </div>
-</template>
+  <NuxtLayout>
+    <NuxtPage />
+  </NuxtLayout>
+</template>

front/layouts/default.vue

@@ -0,0 +1,5 @@
+<template>
+  <div>
+    <slot />
+  </div>
+</template>