fix: forward kwargs to conversable agent + fix typing

[joseferben]

Why are these changes needed?

Agent descriptions should be supported by CompressibleAgent.

This change makes CompressibleAgent behave as it's stated in its documentation, where it says that the kwargs of ConversableAgent are supported.

Also new CompressibleAgent(description="some description") gives a type error, because description is not an explicit argument of the constructor.

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[joshkyh]

Thank you. Any chance you can add two unit tests to https://github.com/microsoft/autogen/blob/main/test/agentchat/contrib/test_compressible_agent.py?

1. Verifies the use of the description parameter when it is supplied.
2. Verifies one example kwarg when it is supplied.

[joseferben]

@microsoft-github-policy-service agree company="beeps"

[joseferben]

@joshkyh Thanks for the review. I added one test, I can't really test the kwargs in a sensible way atm because all the arguments of CompressibleAgent are also the arguments of ConversableAgent.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b548e55) 30.38% compared to head (1cca889) 56.85%.
Report is 6 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1193       +/-   ##
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+ Coverage   30.38%   56.85%   +26.47%     
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  Files          32       32               
  Lines        4302     4680      +378     
  Branches      994     1243      +249     
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+ Hits         1307     2661     +1354     
+ Misses       2901     1771     -1130     
- Partials       94      248      +154     

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unittests	56.60% <ø> (+26.26%)	⬆️

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[joshkyh]

Thanks!
Can you also add
description (str): a short description of the agent. This description is used by other agents (e.g. the GroupChatManager) to decide when to call upon this agent. (Default: system_message) to the docstring?
I copied this from
https://github.com/microsoft/autogen/blob/71fc6e8952c31ea1492252247698f34419efc08f/autogen/agentchat/conversable_agent.py

[joseferben]

@joshkyh done

[joshkyh]

Thanks. Looks good to me.