Added Output support for default Gstreamer shared memory

With option to select and configure socket path

src/Settings.h

@@ -277,6 +277,7 @@ struct Application
     int broadcast_port;
     KnownHosts recentSRT;
     int loopback_camera;
+    int shm_method;
     std::string shm_socket_path;
 
     // Settings of widgets
@@ -337,6 +338,7 @@ struct Application
         recentSRT.protocol = "srt://";
         recentSRT.default_host = { "127.0.0.1", "7070"};
         loopback_camera = 0;
+        shm_method = 0;
         shm_socket_path = "";
         pannel_current_session_mode = 0;
         current_view = 1;