docs: Created a cookbook that walks you through finetuning a Model with GRPO

[apokryphosx]

Description

I added a cookbook that walks a user through finetuning with GRPO

Motivation and Context

Finetuning Agents with RL is a necessary step towards AGI, and GRPO has emerged as a compute cheap alternative to PPO.

• I have raised an issue to propose this change (required for new features and bug fixes)

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• Bug fix (non-breaking change which fixes an issue)
• [ x] New feature (non-breaking change which adds core functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (update in the documentation)
• Example (update in the folder of example)

Checklist

Go over all the following points, and put an x in all the boxes that apply.
If you are unsure about any of these, don't hesitate to ask. We are here to help!

• [ x] I have read the CONTRIBUTION guide. (required)
• My change requires a change to the documentation.
• I have updated the tests accordingly. (required for a bug fix or a new feature)
• I have updated the documentation accordingly.

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[zjrwtx]

thanks！ @apokryphosx Look good to me,but there are something tha still need to be improved:
1.about the pr title, it would be better: docs:Finetuning a Model with GRPO

please refer to the contributing docs:

https://github.com/camel-ai/camel/blob/master/CONTRIBUTING.md#pull-request-item-stage

[zjrwtx]

2.can we add some chat history when using this GRPO model?
3.can we add the final preview when upload the model to huggingface?
4.can we have a directly use demo from the huggingface model which we upload?

[apokryphosx]

2.can we add some chat history when using this GRPO model? 3.can we add the final preview when upload the model to huggingface? 4.can we have a directly use demo from the huggingface model which we upload?

Sure thing! I'll take care off it

[Wendong-Fan]

Thanks for the contribution @apokryphosx ! Could you leave the link of the colab notebook and make it public? That would be helpful for the review