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.

Start by reviewing the README and any other documentation relevant to developers exploring or contributing to the repository. Define which gaps need addressing before making changes; done means the README and related documentation provide sufficient guidance for those audiences, but the issue does not specify the required content or scope.

Written by the indexing model from the issue text.