Documentation on Creating Custom AgentChat Teams

[victordibia]

What feature would you like to be added?

Currently the documentation covers how to create custom agents by inheriting from the base_chat_agent class.
That tutorial is awesome as it instructs on the key methods and abstractions that need to be implemented for custom behaviour. This gives the developer a good foundation to create their own custom agents.

We need something similar for teams.

• What is the right class to inherit from e.g. BaseGroupChat/BaseGroupChatManager etc
• What key methods need to be implemented?
• How are messages routed between agents, how are output messages farmed to the application ... i.e. what happens with team.run()

cc: @afourney , @ekzhu

Why is this needed?

To help developers build custom teams or orchestration logic.