支持 Markdown 动态渲染

[linpengteng]

Is your feature request related to a problem? Please describe.

例如:

• 当我部署在 github 渲染显示如下内容

   git clone https://github.com/username/xxxx.git

• 当我部署在 gitee 渲染显示如下内容

   git clone https://gitee.com/username/xxxx.git

Describe the solution you'd like

Support:

  ```md {render=window.location.href.start('https://github.com')}
     git clone https://github.com/username/xxxx.git
  ```

  ```md {render=window.location.href.start('https://gitee.com')}
     git clone https://gitee.com/username/xxxx.git
  ```

Describe alternatives you've considered

No response

Additional context

No response

Validations

• [X] Follow our Code of Conduct
• [X] Read the docs.
• [X] Read the Contributing Guidelines.
• [X] Check that there isn't already an issue that asks for the same feature to avoid creating a duplicate.

[brc-dd]

That needs too much of architecture change and SSR won't work for those parts defeating the main purpose of VitePress.

You can use something like this instead: https://vitepress.dev/guide/using-vue#unescape-in-code-blocks

```sh-vue
git clone {{ gitUrl }}

[linpengteng]

thank you, it is worked.