moench: get zmq goes to the receiver instead of shm, setand get threshold energey updates zmq and shm value, setand get roi anyways goes to the ddetector, so only updates zmq or gets it from rxr

slsReceiverSoftware/include/slsReceiverTCPIPInterface.h

@@ -253,6 +253,9 @@ class slsReceiverTCPIPInterface : private virtual slsDetectorDefs {
     /** set additional json header */
     int set_additional_json_header();
 
+    /** get additional json header */
+    int get_additional_json_header();
+
     /** set udp socket buffer size */
     int set_udp_socket_buffer_size();