rxr sls namespace (#457)

* rxr src files and classes (detectordata, ZmqSocket) added to sls namespace

* moving defines inside namespace

* moving defines inside namespace, added helpdacs to namespace

* added namespace to gui

* gui also updated

* removed unnecessary sls:: when already in sls namespace for slsDetectoSoftware, receverSoftware, slsDetectorGui and slsSupportlib

slsReceiverSoftware/src/Arping.h

@@ -12,6 +12,8 @@ is listening to.
 #include <atomic>
 #include <thread>
 
+namespace sls {
+
 class Arping {
 
   public:
@@ -33,3 +35,6 @@ class Arping {
     std::thread t;
     std::atomic<pid_t> threadId{0};
 };
+
+} // namespace sls
+