* update docs on agent chat.
* add langchain support
* fix formatting issues
* Update python/packages/autogen-core/docs/src/agentchat-user-guide/index.md
Co-authored-by: gagb <gagb@users.noreply.github.com>
* Update python/packages/autogen-core/docs/src/agentchat-user-guide/index.md
Co-authored-by: gagb <gagb@users.noreply.github.com>
* add company reseach and literature review examples with tools
* format fixes
* format and type fixes
* add selector groupchat to agentchat index page
* rename quick start as code exec
* type fixes
* format fix
* Remove blank cell from notebooks
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Co-authored-by: gagb <gagb@users.noreply.github.com>
Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>