add __init__.py for capabilities

[btcioner]

Why are these changes needed?

some error info like below:

ModuleNotFoundError Traceback (most recent call last)
in <cell line: 3>()
1 import autogen
2 from autogen import UserProxyAgent, config_list_from_json
----> 3 from autogen.agentchat.contrib.capabilities.teachability import Teachability
4 from flaml import tune
5

ModuleNotFoundError: No module named 'autogen.agentchat.contrib.capabilities'

Related issue number

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.

[rickyloynd-microsoft]

Looks reasonable to me. @sonichi it appears that agentchat/contrib/__init__.py is empty. Is this intentional?

[rickyloynd-microsoft]

I've verified that the contrib/capabilities folder is missing from the pyautogen==0.2.4 package, and adding the folder manually under site-packages after a pip install fixes the problem. I assume that adding an __init__.py file per this PR will cause the package build process to pick up the capabilities folder. I also verified that the contents of __init__.py supplied by this PR allow Teachability and AgentCapability to be imported and run, although an empty __init__.py also seems to work.

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (78a2d84) 31.80% compared to head (f764fe6) 39.52%.

Files	Patch %	Lines
autogen/agentchat/contrib/capabilities/__init__.py	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1177      +/-   ##
==========================================
+ Coverage   31.80%   39.52%   +7.71%     
==========================================
  Files          29       32       +3     
  Lines        4112     4301     +189     
  Branches      961     1044      +83     
==========================================
+ Hits         1308     1700     +392     
+ Misses       2710     2475     -235     
- Partials       94      126      +32     

Flag	Coverage Δ
unittests	39.45% <0.00%> (+7.69%)	⬆️

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[rickyloynd-microsoft]

@btcioner The pre-commit-check fails because black wants the list to be on a single line like this:

__all__ = ["Teachability", "AgentCapability"]

Can you make this change in your fork? Thanks.

[rickyloynd-microsoft]

@btcioner The pre-commit-check fails because black wants the list to be on a single line like this:

__all__ = ["Teachability", "AgentCapability"]

Can you make this change in your fork? Thanks.

Oh, it looks like I've got access to your fork. I went ahead and made the change. Now pre-commit-check is happy!