feat: 定期检查文档更新并弹出提醒

- 扩展基础主题代码做抽取

docs/.vitepress/theme/customComponents.ts

@@ -0,0 +1,14 @@
+import { App } from 'vue'
+import Title from '../components/Title.vue'
+import ImgSlider from '../components/ImgSlider.vue'
+
+/**
+ * 批量完成自定义组件的注册
+ */
+export function customComponents(app: App) {
+  const cpns = [Title, ImgSlider]
+
+  for (const c of cpns) {
+    app.component(c.__name, c)
+  }
+}