docs/devdoc/moderated.md

### `ModeratedConversation`: a LLM-driven Environment

We support a more advanced environment called `ModeratedConversation` that allows you to **control the game dynamics
using an LLM**.
The moderator is a special player that controls the game state transition and determines when the game ends.
For example, you can define a moderator that tracks the board status of a board game and ends the game when a player
wins.
You can try out our Tic-tac-toe and Rock-paper-scissors games to get a sense of how it works:

```python
# Tic-tac-toe example
Arena.from_config("examples/tic-tac-toe.json").launch_cli()

# Rock-paper-scissors example
Arena.from_config("examples/rock-paper-scissors.json").launch_cli()
```