refactor: refactor route

src/views/demo/level/Menu12.vue

@@ -0,0 +1,11 @@
+<template>
+  <div class="p-5">
+    多层级缓存-页面1-2
+    <br />
+    <input />
+  </div>
+</template>
+<script lang="ts">
+  import { defineComponent } from 'vue';
+  export default defineComponent({ name: 'Menu12Demo' });
+</script>