Function parse_sse_stream 

pub fn parse_sse_stream(
    response: Response,
) -> impl Stream<Item = Result<RawSseEvent, SseError>>

Parse a reqwest streaming response into a stream of RawSseEvents.

The returned stream yields one item per SSE event (delimited by blank lines). Comment lines (starting with :) are silently skipped.

Uses reqwest::Response::chunk() for incremental reads, which does not require the stream cargo feature on reqwest.