Stream Frame APIs
The stream_frame component is a tiny, dependency-free wire-framing codec:
CRC-32-verified, length-delimited, typed frames plus an incremental,
resynchronizing StreamParser for carrying messages over any raw byte stream
(USB vendor / CDC, TCP/UDP sockets, UART, …). It is the shared substrate under
the OTA stream protocol, the crash-dump service and the Dispatcher APIs
multiplexer.