Moderator functionality

[jonas-becker]

Is your feature request related to a problem? Please describe.
According to the taxonomy of MALLM for my thesis (see excerpt screenshot), the term "moderator" is quite superficial and arguably confusing in our context. What we actually have is a "draft proposer" which is part of moderator functionality.

Describe the solution you'd like
When thinking of future features, it probably makes sense to rename our current "moderator" to "draft_proposer" and add more functionality as additional agents (e.g., "critic", "turn manager")

Describe alternatives you've considered
The screenshots show moderator functionality from five works. There might be more ideas, which could also be added as additional agents.

Additional context