Adds initial intermediate qt6 porting state

qt6-after/qt6-migrated-legatus/Lts/Services/EffectShowClient/connection_handler.cpp

@@ -0,0 +1,22 @@
+/**
+  * Connection Handler for the serial connection to the sfm
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Philipp Dassow, NLST, 2018-01-29
+  */
+
+#include "connection_handler.h"
+
+namespace EffectShowClient
+{
+
+ConnectionHandler::ConnectionHandler(QObject *parent)
+  : ConnectionHandlerSerial(parent)
+{}
+
+ConnectionHandler::~ConnectionHandler()
+{
+}
+
+}