docs: human in the loop cookbook with HumanLayer

[MuggleJinx]

Description

This notebook demonstrates how to set up and leverage CAMEL's ability to interact with user (for approval or comments) during the execution of the tasks.

Motivation and Context

close #1418.

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• Bug fix (non-breaking change which fixes an issue)
• 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

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• 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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[harryeqs]

Thanks @MuggleJinx ! Looks good to me, just some small points about the notebook formatting:

1. Could you update the colab link at the top please? it is currently pointing to an empty template.
2. Shall we hide the output of the pip install cells so it looks tidier?
   Thanks!