Multi-Session ChatGPT support

[shiyemin]

Hi!

I created a set of Multi-Session ChatGPT API based on your work. I have included credits in the project's README file, and I wanted to make sure you were aware of the project.

The api supports multiple session in one service, which can generate output based on each user's context. You can check it out here: https://github.com/shiyemin/ChatGPT-MS

Thanks again!

[acheong08]

Thank you. This will help with #7. Added to list