feat: 日志增强功能

include/video_pipeline.h

@@ -43,6 +43,8 @@ typedef struct video_pipeline_config {
     int hard_backpressure_hold_ms;
     int server_idle_reconnect_ms;
     int frame_stall_reconnect_ms;
+    kcp_session_stats_logger_t *stats_logger;
+    int stats_interval_ms;
     video_pipeline_progress_fn progress_callback;
     void *progress_context;
 } video_pipeline_config_t;