//! MoQT wire codec for draft-13.
//!
//! Key changes from draft-12:
//! - `subscribe_announces` → `subscribe_namespace` (0x11–0x14)
//! - TrackStatusRequest (0x0D) → TrackStatus with subscribe-like fields
//! - TrackStatus (0x0E) → TrackStatusOk with subscribe_ok-like fields
//! - New TrackStatusError (0x0F)
/// Data stream headers (subgroup, datagram, fetch, object).
/// Control message types with encode/decode.
/// Draft-13 types.