Split apart component infra to allow for abstract class integration

[jackgerrits]

This PR addresses some shortcomings in the way the component infra was defined. Essentially, it is fixing the fact that the T in Component[T] had to be invariant before. Now, a consumer can consume just the pieces required and create an abstract base class that can just be ComponentToConfig[BaseModel] and ComponentLoader and still have the subclasses use the concrete types.

This does not break any usage of creating component. The only things it breaks is:

• Usage of ComponentConfigImpl
• Checking for an instance of a component by checking against the Component type. These checks should now be done with is_component_class

I consider these to be incredibly specific and implementation details, especially this early. Therefore, it is not a breaking change.

[codecov]

Codecov Report

Attention: Patch coverage is 90.90909% with 5 lines in your changes missing coverage. Please review.

Project coverage is 68.52%. Comparing base (70f7e99) to head (d307733).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...autogen-core/src/autogen_core/_component_config.py	90.38%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5017      +/-   ##
==========================================
+ Coverage   68.50%   68.52%   +0.01%     
==========================================
  Files         156      156              
  Lines       10129    10140      +11     
==========================================
+ Hits         6939     6948       +9     
- Misses       3190     3192       +2     

Flag	Coverage Δ
unittests	68.52% <90.90%> (+0.01%)	⬆️

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[victordibia]

It might be good to add an "advanced" section to the to config part of the docs with examples on how to use this e.g. for abstract classes.
Thanks.

[jackgerrits]

It might be good to add an "advanced" section to the to config part of the docs with examples on how to use this e.g. for abstract classes. Thanks.

Agreed but I want to use it and make sure it works before we document it. Just in case.