1. wrap the error type for more standardized
2. add more information in error for debug trace
3. wrap helper func for more user-friendly code
Signed-off-by: jokemanfire <hu.dingyang@zte.com.cn>
* feat: expose axum router
* feat: add axum_router example with SSE server implementation
* refactor: simplify SseServer configuration handling in server setup
* docs: add warning to SseServer::new about potential post_path issues with embedded routers