Invite a guest into a live Twitch stream and manage their Guest Star slot

Steps

1. Read current configuration via Get Channel Guest Star Settings to confirm Guest Star is enabled for the broadcaster.
2. Create a session with Create Guest Star Session, or fetch the active one with Get Guest Star Session.
3. Send an invite to the target user with Send Guest Star Invite against the active session.
4. Once accepted, assign the guest to an open slot with Assign Guest Star Slot, then adjust layout/audio with Update Guest Star Slot Settings.
5. Remove a guest or revoke access with Delete Guest Star Slot or Delete Guest Star Invite as needed.
6. End the segment with End Guest Star Session.