⚛️💎🐜 Render Ant Design components to Sketch

🌞Glad to introduce that I am a member of [Ant Design](https://github.com/ant-design) Developers.

**Proposal:**

Self-recommend our project --> [antd-sketchapp](https://github.com/ant-design/antd-sketchapp)

Apart from this, we hope that you guys can provide links to more community cases (of course, including [antd-sketchapp](https://github.com/ant-design/antd-sketchapp)) in the `README.md`, not just in the source code of the project.

**Reason:**
[antd-sketchapp](https://github.com/ant-design/antd-sketchapp) is a very comprehensive practical project for 'react-sketchapp', providing almost the same API as the [ant-design React Components](https://github.com/ant-design/ant-design).

On the one hand, this project provided examples of complex scene usage for 'react-sketchapp' for other developers to communicate and learn.

On the other hand, this project was also used in our internal projects. Our designers dynamically manipulate data to generate flexible Ant-Design layers into Sketch canvas, saving a lot of manual labor.

In addition, our basic theme configuration capabilities give [antd-sketchapp](https://github.com/ant-design/antd-sketchapp) diversity.

Review README.md and its existing community-case references, then examine the linked antd-sketchapp project for the details to present. Done means adding an antd-sketchapp link and, where appropriate, links to other community cases in README.md rather than only in source code.

Written by the indexing model from the issue text.