### Motivation and Context

For those who use AutoGen's 0.2 `ConversableAgent`, we're providing
support in Semantic Kernel to run this agent type. This assumes one will
port their existing AG 0.2.X `ConversableAgent` code and run in Semantic
Kernel.

Note: as we move towards GA for our agent chat patterns, we are
analyzing how to support AutoGen agents with a shared time. This PR does
not provide support for the AG `ConversibleAgent` group chat patterns
that exist in the 0.2.X package.

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### Description

Add support and samples for the AG 0.2.X ConversableAgent. 
- Add unit test coverage.
- Add samples and READMEs.
- Closes #10407

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### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [X] The code builds clean without any errors or warnings
- [X] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [X] All unit tests pass, and I have added new tests where possible
- [X] I didn't break anyone 😄

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Co-authored-by: Chris <[email protected]>