Stable metadata for one QUIC stream from local endpoint perspective.
@type direction() :: :bidirectional | :unidirectional
@type initiator() :: :local | :peer
@type role() :: :client | :server
@type t() :: %MOQX.Transport.Conn.Stream.Info{ direction: direction(), initiator: initiator(), initiator_role: role(), local_role: role(), receive_side?: boolean(), send_side?: boolean(), stream_id: non_neg_integer() }