feat: use unplugin-auto-import instead of vue-global-api

src/pages/hi/[name].vue

@@ -1,6 +1,4 @@
 <script setup lang="ts">
-import { useRouter } from 'vue-router'
-
 const props = defineProps<{ name: string }>()
 const router = useRouter()
 </script>

src/pages/index.vue

@@ -1,6 +1,4 @@
 <script setup lang="ts">
-import { useRouter } from 'vue-router'
-
 const name = ref('')
 
 const router = useRouter()