Adds initial intermediate qt6 porting state

qt6-after/qt6-migrated-legatus/Lts/Proxies/TrainingAreaBaseOC/testmain.cpp

@@ -0,0 +1,21 @@
+
+#include <nglapplication/nglcoreapplication.h>
+#include <memory>
+
+#include "connection_handler.h"
+#include "settings.h"
+
+int main(int argc, char **argv)
+{
+  int iRet = -1;
+  NGLCoreApplication app(argc, argv);
+  app.createLogger("TABOC", 0);
+
+  TrainingAreaBaseOC::Settings::setIniFile(QStringLiteral("taboc.dat"));
+
+  std::unique_ptr<TrainingAreaBaseOC::ConnectionHandler> conn(new TrainingAreaBaseOC::ConnectionHandler);
+  if (conn->init())
+    iRet = app.exec();
+
+  return iRet;
+}