Blog post for enhanced non-OpenAI model support

[marklysze]

PR for blog post for the enhanced support of non-OpenAI models through new client classes. Includes Anthropic, Mistral.AI, Together.AI so far.

Related issue number

See Roadmap issue #2946

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.

[olgavrou]

LGTM when comment is resolved

[marklysze]

Thanks @olgavrou, I'll put the function calling in and would like to write some text around using these alternative models including some tips/parameters that are useful to tweak and work with. That will take a day or two to do. Hope that's okay.

There is also a dependency on the next release, which will include these new client classes, v0.2.30. #2946

[marklysze]

I've updated with the upfront text. Still to do is the function calling example which I'll work on next.

[gitguardian]

⚠️ GitGuardian has uncovered 1 secret following the scan of your pull request.

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GitGuardian id	GitGuardian status	Secret	Commit	Filename
11616921	Triggered	Generic High Entropy Secret	0f33e84	notebook/agentchat_agentops.ipynb	View secret

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[marklysze]

Thanks @olgavrou and @qingyun-wu, I've added the function calling to the blog post. Have also added a separate notebook for more function calling between different providers (separated it as it was very long).

Let us know what you think and if we can improve it.

[marklysze]

Thanks for approving @olgavrou!

@qingyun-wu, let us know if you would like anyone else to review or if you want any changes. Groq has been added since it is now merged.