Ability to retrieve RequestToSpeak messages from the GroupChatManager

[rlaraki]

What feature would you like to be added?

Hello, to follow up on a discussion with @ekzhu, I am submitting this issue.
This is about the ability to retrieve the inner thoughts (or speaker selections) of the BaseGroupChatManager.
Ideally, those would be published in one topic, at the same time as the ChatMessages.

Why is this needed?

This is important to retrieve the next speaker before he speaks. This is to properly reflect it in the "reasoning" step in UIs e.g. Chainlit.

[ekzhu]

It's a general issue. I think one way to do this is to add a flag parameter to group chat teams, e.g., team_messages.

team = SelectorGroupChat([...], team_messages=True)

to include these orchestration messages such as RequestToSpeak in the task result and in run_stream.

Alternatively, just include them by default.

These messages may require separate message types to better annotate what is happening.