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/DotMatrixDisplay/nglsettings.cpp

@@ -0,0 +1,186 @@
+/**
+  * @RDE_HEADER@
+  * Settings for Display Panel Simulator
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Florian Schult, SLSE, 2016-03-18
+  */
+#include "nglsettings.h"
+
+#include <QtCore/QCoreApplication>
+#include <QtCore/QSettings>
+
+#include <NGLLogger/NGLLoggerBootstrap.h>
+
+static NGLSettings *s_instance = nullptr;
+
+static void cleanupSettings()
+{
+  delete s_instance;
+  s_instance = nullptr;
+}
+
+NGLSettings::NGLSettings(const QString &iniFileName)
+  : NGL::Settings(iniFileName)
+{
+  s_instance = this;
+}
+
+NGLSettings::~NGLSettings()
+{
+}
+
+PortMap NGLSettings::ports()
+{
+  PortMap portMap;
+  settings()->beginGroup(QStringLiteral("Ports"));
+  {
+    int size = settings()->beginReadArray(QStringLiteral("Port"));
+    {
+      for (int i = 0; i < size; i++)
+      {
+        Port p;
+        settings()->setArrayIndex(i);
+        p.port = settings()->value(QStringLiteral("PortNumber")).toInt();
+        p.name = settings()->value(QStringLiteral("Title")).toString();
+        portMap.insert(i, p);
+      }
+    }
+    settings()->endArray();
+  }
+  settings()->endGroup();
+  return portMap;
+}
+
+void NGLSettings::setPorts(const PortMap &portMap)
+{
+  settings()->beginGroup(QStringLiteral("Ports"));
+  {
+    settings()->remove(QString());
+    settings()->beginWriteArray(QStringLiteral("Port"));
+    {
+      int i = 0;
+      for (const Port &port : portMap)
+      {
+        settings()->setArrayIndex(i++);
+        settings()->setValue(QStringLiteral("PortNumber"), port.port);
+        settings()->setValue(QStringLiteral("Title"), port.name.isEmpty() ? QObject::tr("Port: %1").arg(port.port, 5) : port.name);
+      }
+    }
+    settings()->endArray();
+  }
+  settings()->endGroup();
+}
+
+QString NGLSettings::lastMode()
+{
+  return settings()->value(QStringLiteral("lastMode")).toString();
+}
+
+void NGLSettings::setLastMode(const QString &modeName)
+{
+  settings()->setValue(QStringLiteral("lastMode"), modeName);
+}
+
+QByteArray NGLSettings::windowGeometry()
+{
+  return settings()->value(QStringLiteral("Window/Geometry")).toByteArray();
+}
+
+void NGLSettings::setWindowGeometry(const QByteArray &ba)
+{
+  settings()->setValue(QStringLiteral("Window/Geometry"), ba);
+}
+
+QByteArray NGLSettings::windowState()
+{
+  return settings()->value(QStringLiteral("Window/WindowState")).toByteArray();
+}
+
+void NGLSettings::setWindowState(const QByteArray &ba)
+{
+  settings()->setValue(QStringLiteral("Window/WindowState"), ba);
+}
+
+QByteArray NGLSettings::preFullscreenwindowState()
+{
+  return settings()->value(QStringLiteral("Window/PreFullscreenState")).toByteArray();
+}
+
+void NGLSettings::setPreFullscreenWindowState(const QByteArray &ba)
+{
+  settings()->setValue(QStringLiteral("Window/PreFullscreenState"), ba);
+}
+
+QByteArray NGLSettings::preFullscreenwindowGeometry()
+{
+  return settings()->value(QStringLiteral("Window/PreFullscreenGeometry")).toByteArray();
+}
+
+void NGLSettings::setPreFullscreenWindowGeometry(const QByteArray &ba)
+{
+  settings()->setValue(QStringLiteral("Window/PreFullscreenGeometry"), ba);
+}
+
+ModeMap NGLSettings::modes()
+{
+  ModeMap modemap;
+  settings()->beginGroup(QStringLiteral("Modes"));
+  {
+    int size = settings()->beginReadArray(QStringLiteral("Mode"));
+    {
+      for (int i = 0; i < size; i++)
+      {
+        settings()->setArrayIndex(i);
+        Mode m;
+        m.name    = settings()->value(QStringLiteral("name")).toString();
+        m.lines   = settings()->value(QStringLiteral("lines")).toInt();
+        m.letters = settings()->value(QStringLiteral("letters")).toInt();
+        m.height  = settings()->value(QStringLiteral("height")).toInt();
+        modemap.insert(m.name, m);
+      }
+    }
+    settings()->endArray();
+  }
+  settings()->endGroup();
+
+  return modemap;
+}
+
+void NGLSettings::addMode(const Mode &mode)
+{
+  settings()->beginGroup(QStringLiteral("Modes"));
+  {
+    settings()->beginWriteArray(QStringLiteral("Mode"));
+    {
+      settings()->setValue(QStringLiteral("name"), mode.name);
+      settings()->setValue(QStringLiteral("lines"), mode.lines);
+      settings()->setValue(QStringLiteral("letters"), mode.letters);
+      settings()->setValue(QStringLiteral("height"), mode.height);
+    }
+    settings()->endArray();
+  }
+  settings()->endGroup();
+}
+
+bool NGLSettings::fullscreen()
+{
+  return settings()->value(QStringLiteral("lastFullscreen")).toBool();
+}
+
+void NGLSettings::setFullscreen(bool fullscreen)
+{
+  settings()->setValue(QStringLiteral("lastFullscreen"), fullscreen);
+}
+
+NGLSettings *NGLSettings::instance(const QString &iniFileName)
+{
+  if (!s_instance)
+    qAddPostRoutine(cleanupSettings);
+
+  delete s_instance;
+  s_instance = new NGLSettings((!s_instance && iniFileName.isEmpty()) ? QStringLiteral("DotMatrixDisplay.ini") : iniFileName);
+
+  return s_instance;
+}