Add extra_body field to LLMConfig dataclass for Azure AI Search support on Autogen studio

[christianladron]

Why are these changes needed?

Adding extra_body field to llm configuration for autogen studio allows to use Azure AI Search indexes like shown in Bring your own data

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 37.53%. Comparing base (e1c0423) to head (fe5d20e).
Report is 1238 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
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  Coverage   37.53%   37.53%           
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  Files          65       65           
  Lines        6913     6913           
  Branches     1521     1521           
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  Hits         2595     2595           
  Misses       4092     4092           
  Partials      226      226           

Flag	Coverage Δ
unittests	37.53% <ø> (ø)

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[victordibia]

@christianladron ,
Thanks for adding this.
When you have sometime, can you share more on your use case e.g. the task and also how you are integrating with ags (e.g., directly workflowmanager or a fastapi end point) etc.