docs: add License for md files.

Author: WuChenDi

README.md

@@ -7,3 +7,7 @@
 | [@cdlab996/element-plus-lowcode-materials](packages/element-plus) | Element Plus(2.6.3) Materials   | [![npm version](https://img.shields.io/npm/v/@cdlab996/element-plus-lowcode-materials?logo=npm)](https://www.npmjs.com/package/@cdlab996/element-plus-lowcode-materials) |
 | [@cdlab996/antd-lowcode-materials](packages/ant-design-vue)       | Ant Design Vue(4.1.2) Materials | [![npm version](https://img.shields.io/npm/v/@cdlab996/antd-lowcode-materials?logo=npm)](https://www.npmjs.com/package/@cdlab996/antd-lowcode-materials)                 |
 | [@cdlab996/vant-lowcode-materials](packages/vant)                 | Vant(4.8.10) Materials          | [![npm version](https://img.shields.io/npm/v/@cdlab996/vant-lowcode-materials?logo=npm)](https://www.npmjs.com/package/@cdlab996/vant-lowcode-materials)                 |
+
+## 📜 License
+
+[MIT](./LICENSE) License © 2023-PRESENT [cdLab996](https://github.com/cdLab996)