add layout

app.vue

 <template>
-    <NuxtLayout>
+    <NuxtLayout name="default">
         <NuxtPage />
     </NuxtLayout>
 </template>
-<script setup lang="ts">
-
-</script>
\ No newline at end of file

layouts/default.vue

+<template>
+    <div class="flex h-screen">
+        <div class="bg-gray-100 text-white w-64 flex flex-col">
+
+        </div>
+        <div class="flex-grow bg-white p-6">
+            <slot />
+        </div>
+    </div>
+</template>

pages/index.vue

 <template>
-
+    Home
 </template>
 <script setup>