Docusaurus-ify (#26051)

This PR cleans up the docs in a way to make them simpler to ingest by
our [docs repo](https://gitea.com/gitea/gitea-docusaurus).

1. It includes all of the sed invocations our ingestion did, removing
the need to do it at build time.
2. It replaces the shortcode variable replacement method with
`@variable@` style, simply for easier sed invocations when required.
3. It removes unused files and moves the docs up a level as cleanup.

---------

Signed-off-by: jolheiser <john.olheiser@gmail.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/docs/content/usage/agit-support.zh-cn.md b/docs/content/usage/agit-support.zh-cn.md
new file mode 100644
index 0000000000..6a2ce1c373
--- /dev/null
+++ b/docs/content/usage/agit-support.zh-cn.md
@@ -0,0 +1,49 @@
+---
+date: "2023-05-23T09:00:00+08:00"
+title: "Agit 设置"
+slug: "agit-setup"
+sidebar_position: 12
+toc: false
+draft: false
+aliases:
+  - /zh-cn/agit-setup
+menu:
+  sidebar:
+    parent: "usage"
+    name: "Agit 设置"
+    sidebar_position: 12
+    identifier: "agit-setup"
+---
+
+# Agit 设置
+
+在 Gitea `1.13` 版本中，添加了对 [agit](https://git-repo.info/zh/2020/03/agit-flow-and-git-repo/) 的支持。
+
+## 使用 Agit 创建 PR
+
+Agit 允许在推送代码到远程仓库时创建 PR（合并请求）。
+通过在推送时使用特定的 refspec（git 中已知的位置标识符），可以实现这一功能。
+下面的示例说明了这一点：
+
+```shell
+git push origin HEAD:refs/for/master
+```
+
+该命令的结构如下：
+
+- `HEAD`：目标分支
+- `refs/<for|draft|for-review>/<branch>`：目标 PR 类型
+  - `for`：创建一个以 `<branch>` 为目标分支的普通 PR
+  - `draft`/`for-review`：目前被静默忽略
+- `<branch>/<session>`：要打开 PR 的目标分支
+- `-o <topic|title|description>`：PR 的选项
+  - `title`：PR 的标题
+  - `topic`：PR 应该打开的分支名称
+  - `description`：PR 的描述
+  - `force-push`：确认强制更新目标分支
+
+下面是另一个高级示例，用于创建一个以 `topic`、`title` 和 `description` 为参数的新 PR，目标分支是 `master`：
+
+```shell
+git push origin HEAD:refs/for/master -o topic="Topic of my PR" -o title="Title of the PR" -o description="# The PR Description\nThis can be **any** markdown content.\n- [x] Ok"
+```