Add support for Parallel Function Calling

[Ran-Mewo]

https://platform.openai.com/docs/guides/function-calling/parallel-function-calling

[namankhurpia]

Hi @Ran-Mewo

I m not sure if anyone is updating it anymore, you can check this https://github.com/namankhurpia/Easy-open-ai

I m regularly maintaining and adding new features, feel free to raise issues at my repository.

I have even added support for parallel function calling, - Multithreading support added

Thanks