[Docs] Update Readme on project intro

[xieus]

Pull Request Description

Update Readme on project introduction

Important: Before submitting, please complete the description above and review the checklist below.

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Contribution Guidelines (Expand for Details)

We appreciate your contribution to aibrix! To ensure a smooth review process and maintain high code quality, please adhere to the following guidelines:

Pull Request Title Format

Your PR title should start with one of these prefixes to indicate the nature of the change:

• [Bug]: Corrections to existing functionality
• [CI]: Changes to build process or CI pipeline
• [Docs]: Updates or additions to documentation
• [API]: Modifications to aibrix's API or interface
• [CLI]: Changes or additions to the Command Line Interface
• [Misc]: For changes not covered above (use sparingly)

Note: For changes spanning multiple categories, use multiple prefixes in order of importance.

Submission Checklist

• PR title includes appropriate prefix(es)
• Changes are clearly explained in the PR description
• New and existing tests pass successfully
• Code adheres to project style and best practices
• Documentation updated to reflect changes (if applicable)
• Thorough testing completed, no regressions introduced

By submitting this PR, you confirm that you've read these guidelines and your changes align with the project's contribution standards.

[Jeffwan]

This is great! Please also help sync the content to this page https://github.com/aibrix/aibrix/blob/main/docs/source/index.rst

[xieus]

Sure. Updated the rst file and tested locally with the following tool. Let me know if there is any better tool.

pip install restview
restview index.rst

A html page will be displayed as follows:

[Jeffwan]

@xieus You can follow this instruction to launch the site. The change looks good to me

https://github.com/aibrix/aibrix/tree/main/docs