New List Agent Groups API added

The List Agent Groups API has been added to the Agents endpoint, allowing you to retrieve all multi-agent groups associated with a specific agent.

1from letta_client import Letta
2client = Letta(
3 token="YOUR_API_KEY",
4)
5agent_groups = client.agents.list_agent_groups(
6 agent_id="AGENT_ID",
7)