on_publish hook新增continue_push_ms参数，用于断连续推延时控制

src/Common/MultiMediaSourceMuxer.h

@@ -52,6 +52,9 @@ public:
 
     //hls录制保存路径
     std::string hls_save_path;
+
+    //断连续推延时，单位毫秒，默认采用配置文件
+    uint32_t continue_push_ms;
 };
 
 class MultiMediaSourceMuxer : public MediaSourceEventInterceptor, public MediaSink, public std::enable_shared_from_this<MultiMediaSourceMuxer>{