docs: improve the README and other related documentation

### Current Limitation

The amount of documentation we have is not enough.

### Suggested Improvement

Need to improve the `README` and other relevant information to help developers who are looking to explore/contribute.

### Please select the package issue is related to

- N/A

### Version

- N/A

### Reporter Checklist

- [x] I have searched the existing issues and this is not a duplicate.
- [x] I have provided all the necessary information.
- [x] I have verified the improvement is not available in the latest version of the package.

首先查看 README 以及与探索或贡献 repository 的开发者相关的任何其他文档。确定在进行更改之前需要解决哪些不足；当 README 和相关文档为这些受众提供了足够的指导时，即视为完成，但 issue 未指定所需的内容或范围。

由索引模型根据 Issue 内容生成。