refactor: migrate to nuxt

pages/404.vue

@@ -0,0 +1,17 @@
+<script setup lang="ts">
+const router = useRouter()
+</script>
+
+<template>
+  <main p="x4 y10" text="center green-700 dark:gray-200">
+    <div text-4xl>
+      <div i-ri-error-warning-line inline-block />
+    </div>
+    <div>菜谱消失了</div>
+    <div>
+      <button text-sm btn m="3 t8" @click="router.back()">
+        返回
+      </button>
+    </div>
+  </main>
+</template>