Restructure documentation. Now the documentation has installation, administration, usage, development, contributing the 5 main parts (#23629)

- **Installation**: includes how to install Gitea and related other
tools, also includes upgrade Gitea
- **Administration**: includes how to configure Gitea, customize Gitea
and manage Gitea instance out of Gitea admin UI
- **Usage**: includes how to use Gitea's functionalities. A sub
documentation is about packages, in future we could also include CI/CD
and others.
- **Development**: includes how to integrate with Gitea's API, how to
develop new features within Gitea
- **Contributing**: includes how to contribute code to Gitea
repositories.

After this is merged, I think we can have a sub-documentation of `Usage`
part named `Actions` to describe how to use Gitea actions

---------

Co-authored-by: John Olheiser <john.olheiser@gmail.com>

docs/content/doc/usage/webhooks.zh-cn.md

@@ -0,0 +1,32 @@
+---
+date: "2016-12-01T16:00:00+02:00"
+title: "Webhooks"
+slug: "webhooks"
+weight: 10
+toc: false
+draft: false
+menu:
+  sidebar:
+    parent: "usage"
+    name: "Webhooks"
+    weight: 30
+    identifier: "webhooks"
+---
+
+# Webhooks
+
+Gitea 的存储 webhook。这可以有存储库管路设定页 `/:username/:reponame/settings/hooks` 中的。Webhook 也可以按照组织调整或全系统调整，所有时间的推送都是POST请求
+。此方法目前被下列服务支援：
+
+- Gitea (也可以是 GET 請求)
+- Gogs
+- Slack
+- Discord
+- Dingtalk
+- Telegram
+- Microsoft Teams
+- Feishu
+- Wechatwork
+- Packagist
+
+## TBD