Qt6 Migration: Complete migration with DDS/RTI support and build validation

Major Changes:
- Merged latest Qt5 devel content from dlbo (292 files changed, 7 new dirs)
- Consolidated forward-declarations and include folders
- Removed unneeded modules per Niklas' repo check list

Build System Fixes:
- Fixed CMake VERSION_GREATER syntax in ParticipantManagement/CMakeLists.txt
- Added VLC packages (libvlc-dev, vlc-plugin-base) to docker_build.sh
- Added PostgreSQL dev packages (libpq-dev, postgresql-server-dev-all) to Dockerfile
- Fixed locale warnings (ANSI_X3.4-1968 → C.UTF-8)
- Fixed ArcGIS SDK path warnings when BUILD_ARCGIS=OFF

Code Generation Fixes:
- Fixed IDL enum collisions (PortType→CorePortType/DdsutPortType, PdmEventType)
- Fixed Grantlee template svc_translation.cpp.grantlee:
  - Changed {{ idl_enum.name }}_def:: to {{ idl_enum.name }}::
  - Fixed .underlying() calls for C++11 scoped enums (enum class)
- Removed generated files from repo (moc_*, *_dtc.h, *_ftc.h)

Validation:
- BUILD_RTI=ON: SUCCESS
- BUILD_RTI=OFF: SUCCESS
- C++17 standard maintained for RTI 7.7 compatibility
- Ubuntu 26.04 Docker environment verified

Remaining Warnings (expected):
- BgViewer, KDChart, KDReports, Poppler-Qt6 not found (optional features)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt5-before/dlbo/Lts/Tools/DataSampleGenerator/main.cpp

@@ -0,0 +1,104 @@
+/**
+  * @RDE_HEADER@
+  * main (TopicDataGenerator)
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#include <nglapplication/nglcoreapplication.h>
+#include <NGLLogger/INGLLogger.h>
+
+#include "initialisation.h"
+
+#include <DDS/Generic/generic_base.h>
+
+#include <ExerciseManagement/exm.hpp>
+#include <ParticipantManagement/ppm.hpp>
+
+#include <LtsCommandLineParser/LtsCommandLineParser.h>
+#include <QSet>
+#include <QThread>
+#include <QVector>
+#include <string>
+
+
+class CmdLineParser : public LtsCommandLineParser::LtsCommandLineParser
+{
+public:
+  CmdLineParser()
+    : LtsCommandLineParser()
+  {
+    addOption( { QStringList() << QLatin1String("s") << QLatin1String("maxSamples"),
+                 QLatin1String("Default: 0 (infinite loop)"),
+                 QLatin1String("Max Samples"),
+                 QLatin1String("0") } );
+    addOption( { QStringList() << QLatin1String("t") << QLatin1String("doType"),
+                 QLatin1String("ExerciseManagement::Exercise|Participant::Participant"),
+                 QLatin1String("doType"),
+                 QLatin1String("ExerciseManagement::Exercise") } );
+  }
+
+  int maxSamples() const { return isSet(QLatin1String("s")) ? value(QLatin1String("s")).toInt() : -1; }
+
+  QString getDoType() const
+  {
+    return value(QLatin1String("t"));
+  }
+
+  bool init()
+  {
+    LtsCommandLineParser::init(false);
+    if (isSet(QLatin1String("h")))
+    {
+      fprintf(stdout, "\ndoType: ExerciseManagement::Exercise\n");
+      fprintf(stdout, "\ndoType: Participant::Participant\n");
+      fprintf(stdout, "\n\n");
+      showHelp();
+    }
+    return true;
+  }
+};
+
+
+int main ( int argc, char**argv )
+{
+  NGLCoreApplication app ( argc, argv );
+  app.createLogger("DataSampleGenerator.main", "log4cxx_tdsg.props");
+
+  CmdLineParser   options;
+  if (!options.init())
+    return -1;
+
+  // TODO: Use plugins of services
+  const auto doType = options.getDoType();
+  DEBUG_LOG(app.baseLogger()) << "Using doType (" << doType << ")";
+
+  DataSampleGenerator::Initialisation *initTDGen = new DataSampleGenerator::Initialisation(options.domainId(), options.exerciseId());
+  if (!initTDGen->init())
+  {
+    delete initTDGen;
+    return -2;
+  }
+
+  STARTUP_LOG(app.baseLogger());
+
+  // if maxSamples == 0 => infinite loop
+  long maxSamples = options.maxSamples();
+
+  int receive_period = 4;
+  for (long i = 0; (maxSamples == 0) || (i < maxSamples) ; ++i)
+  {
+    initTDGen->generateTestData(doType);
+    QThread::sleep(receive_period);
+  }
+
+  delete initTDGen;
+
+  SHUTDOWN_LOG(app.baseLogger());
+
+  return 0;
+}
+
+
+