feat(integration): Adding langchain and crewai adapter for uAgents

[abhifetch]

Proposed Changes

Addititon of langchain uagents adapter in experiment

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• Bug fix (non-breaking change that fixes an issue).
• New feature added (non-breaking change that adds functionality).
• Breaking change (fix or feature that would cause existing functionality to stop working as expected).
• Documentation update.
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• I have read the CONTRIBUTING guide
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• I have added tests that prove my fix is effective or that my feature works
• I have added/updated the documentation (executed the script in python/scripts/generate_api_docs.py)

Further comments

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[abhifetch]

can find example and readme for how to use it here : https://github.com/abhifetch/uAgents-Adapter

[github-actions]

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[Archento]

Thank you for your contribution.

I strongly believe that this belongs in the 3-applications folder of the official uAgents examples repo as it introduces dependencies into the core framework and is more of an integration than a core functionality of uagents.
Also, the target folder here would be /contrib rather than /experimental

[abhifetch]

@Archento Thanks for the suggestion, I have discussed this with @ejfitzgerald and got this into the experimental folder. I know this is integration, we want developers to use these integrations and directly get their agent on agentverse with chat protocol enabled.

@ejfitzgerald can you please comment on what should be preferred here.

[jrriehl]

These look really cool, but as others have already pointed out, openai and langchain_core are not dependencies of uagents, so these will fail without an extra installation step. I feel like these could go directly in https://github.com/fetchai/uAgent-Examples and would be a perfect fit there as integrations.

[Archento]

A couple of things here:

• why is the register tool not a separate class that both derivates can use
• why do you use threading when most of the current architecture can make better use of multiprocessing or even simply asyncio tasks in a single thread
• adding to the above: hardcoded time.sleep should generally be avoided and instead sequential event based approaches used
• the chat handlers have overly complex case logic which is prone to errors and could potentially be simplified
• the pyproject file could be updated to adhere to the current python standard which is tool agnostic (avoid, if possible, that Poetry needs to be used)
• pytest is imported but there are no tests
• since >=python3.10 is defined, please also adhere to the new typing requirements

All of these should eventually be tackled but I assume this can happen down the line / as a patch afterwards.

Otherwise looks good to me 👍🏻

[abhifetch]

Thankyou @Archento , I will address all of these in the coming release.