OptionalCameraHave the user check the camera before the agent sees it. The call's first camera start opens the camera for the
user only: the camera's state is starting with Checking set and the stream to preview, and nothing reaches the
agent until the host calls ConfirmCamera. Later starts in the same call skip the check. Set it only when the host
shows the check; otherwise the camera waits for a confirmation that never comes.
OptionalConversationThe fork (MJ: Conversation Branches.ID) the session starts on; omitted or null is Main.
OptionalHostChannels the host brings to this session (see RealtimeHostChannelDeclaration).
Per-start options of RealtimeSessionRuntime.StartRealtimeSession that are not part of the mint contract. Every field is optional; omit the whole object for the behavior hosts always had.