Rx roi zmq (#726)

adding rx_roi also in the zmq header for external guis to put the "yellow box".. sending full roi instead of -1, and sending for each zmq port. "(multiple yellow boxes)".

slsReceiverSoftware/src/Implementation.h

@@ -282,6 +282,7 @@ class Implementation : private virtual slsDetectorDefs {
     void SetupFifoStructure();
 
     const xy GetPortGeometry() const;
+    const ROI GetMaxROIPerPort() const;
     void ResetParametersforNewAcquisition();
     void CreateUDPSockets();
     void SetupWriter();