feat: add global register

site/.vitepress/theme/index.ts

@@ -2,11 +2,13 @@ import type { Theme } from 'vitepress'
 // eslint-disable-next-line import/no-named-as-default
 import DefaultTheme from 'vitepress/theme'
 import { AntdTheme } from 'vite-plugin-vitepress-demo/theme'
+import Antd from '../../../components'
 
 export default {
   ...DefaultTheme,
   enhanceApp(ctx) {
     DefaultTheme.enhanceApp?.(ctx)
     ctx.app.component('Demo', AntdTheme)
+    ctx.app.use(Antd)
   }
 } as Theme

site/demos/button/basic.vue

@@ -10,7 +10,9 @@ title: 基础按钮
 <script lang="ts" setup></script>
 
 <template>
-  <div></div>
+  <div>
+    <a-button>这是按钮</a-button>
+  </div>
 </template>
 
 <style scoped></style>