docs: add zh-tw folder (#195)

Signed-off-by: appleboy <appleboy.tw@gmail.com>
Reviewed-on: https://gitea.com/gitea/docs/pulls/195
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: appleboy <appleboy.tw@gmail.com>
Co-committed-by: appleboy <appleboy.tw@gmail.com>

i18n/zh-tw/docusaurus-theme-classic/footer.json

@@ -0,0 +1,34 @@
+{
+  "link.title.Docs": {
+    "message": "文档",
+    "description": "The title of the footer links column with title=Docs in the footer"
+  },
+  "link.title.Community": {
+    "message": "社区",
+    "description": "The title of the footer links column with title=Community in the footer"
+  },
+  "link.title.More": {
+    "message": "更多",
+    "description": "The title of the footer links column with title=More in the footer"
+  },
+  "link.item.label.Tutorial": {
+    "message": "教程",
+    "description": "The label of footer link with label=Tutorial linking to /"
+  },
+  "link.item.label.Code": {
+    "message": "开源代码",
+    "description": "The label of footer link with label=Code linking to https://github.com/go-gitea/gitea"
+  },
+  "link.item.label.Stack Overflow": {
+    "message": "Stack Overflow",
+    "description": "The label of footer link with label=Stack Overflow linking to https://stackoverflow.com/questions/tagged/gitea"
+  },
+  "link.item.label.Discord": {
+    "message": "Discord",
+    "description": "The label of footer link with label=Discord linking to https://discord.gg/gitea"
+  },
+  "link.item.label.Twitter": {
+    "message": "Twitter",
+    "description": "The label of footer link with label=Twitter linking to https://twitter.com/giteaio"
+  }
+}