Add Traditional Chinese translation

src/partials/language/zh_CN.html

@@ -1,5 +1,5 @@
 {% macro t(key) %}{{ {
-  "language": "zh",
+  "language": "zh_CN",
   "clipboard.copy": "复制",
   "clipboard.copied": "粘贴",
   "edit.link.title": "编辑此页",

src/partials/language/zh_TW.html

@@ -0,0 +1,18 @@
+{% macro t(key) %}{{ {
+  "language": "zh_TW",
+  "clipboard.copy": "拷貝",
+  "clipboard.copied": "粘貼",
+  "edit.link.title": "編輯此頁",
+  "footer.previous": "前進",
+  "footer.next": "後退",
+  "meta.comments": "評論",
+  "meta.source": "來源",
+  "search.placeholder": "搜索",
+  "search.result.placeholder": "鍵入以開始檢索",
+  "search.result.none": "沒有找到符合條件的結果",
+  "search.result.one": "找到 1 个符合條件的結果",
+  "search.result.other": "# 個符合條件的結果",
+  "search.tokenizer": "[\，\。]+",
+  "source.link.title": "前往 Github 倉庫",
+  "toc.title": "目錄"
+}[key] }}{% endmacro %}