Add GitBook theme structure with Traditional Chinese docs

gitbook/components/ArticleInfo.js

@@ -0,0 +1,17 @@
+/**
+ * 文章補充資訊
+ * @param {*} param0
+ * @returns
+ */
+export default function ArticleInfo({ post }) {
+  if (!post) {
+    return null
+  }
+  return (
+    <div className='pt-10 pb-6 text-gray-400 text-sm'>
+      <i className='fa-regular fa-clock mr-1' />
+      Last update:{' '}
+      {post.date?.start_date || post?.publishDay || post?.lastEditedDay}
+    </div>
+  )
+}