Add rx_streamdummyheader command (#1442)

* add rx_restream_stop command. This allows to send a ZMQ dummy header any time user wants to do so. For example this allows to pre-configure the ZMQ processing software before the acquisition begins. Therefore, the dummy header was adapted in order to contain the fields stored in the receiver.

* renamed command, changed inherit, moved commands to zmq related section

* update filename in restreamstop

* renamed helper function, sorted header fields alphabetically

* fixed fnametostream set

* renamed functions, add SetFileName method, format JSON parameters order

* added python bindings and formatting (does nothing really)

* renamed restream stop functions to stream dummy

* checkout .github files from ed8c885

* release notes

---------

Co-authored-by: Dhanya Thattil <dhanya.thattil@psi.ch>

slsDetectorSoftware/src/Detector.cpp

@@ -1636,6 +1636,10 @@ void Detector::setRxZmqHwm(const int limit) {
     }
 }
 
+void Detector::streamRxDummyHeader(Positions pos) const {
+    pimpl->Parallel(&Module::streamRxDummyHeader, pos);
+}
+
 // Eiger Specific
 
 Result<ns> Detector::getSubExptime(Positions pos) const {