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/displayPanelSimulatorWidget.h

@@ -0,0 +1,75 @@
+/**
+  * @RDE_HEADER@
+  * Display Panel Simulator widget; manages the LED-lines and servers
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Florian Schult, SLSE, 2016-03-18
+  */
+#pragma once
+
+//===Include specifications==================================================
+#include "customMapsAndEnum.h"
+
+#include <QMainWindow>
+#include <QVector>
+#include <NGLLogger/INGLLogger.h>
+
+namespace Ui
+{
+class DisplayPanelSimulatorWidget;
+}
+
+class DisplayPanelSimulatorTcpServer;
+class QLedLine;
+class DebugMessages;
+class QLabel;
+class QImage;
+class QSize;
+
+
+class DisplayPanelSimulatorWidget : public QMainWindow
+{
+  Q_OBJECT
+
+public:
+  DisplayPanelSimulatorWidget(/*QWidget *parent = nullptr*/);
+  ~DisplayPanelSimulatorWidget();
+  static DisplayPanelSimulatorWidget *self();
+  int initialize(const QString &mode_, const QVector<int> &ports, bool fullscreen, bool showPort, const QString &imagePath);
+
+
+protected:
+  virtual void changeEvent(QEvent *event);
+  virtual void closeEvent(QCloseEvent *event);
+  virtual void keyPressEvent(QKeyEvent *e);
+
+
+public slots:
+  void onDebugInfosAction();
+  void onFullscreenAction(bool fullscreen);
+
+private Q_SLOTS:
+  void writeMultiLiners(const QString &string);
+  void onErrorMsg(int port, const QString &string, MsgLvl lvl);
+  void onExitAction();
+  void onSaveSettingsAction();
+
+
+private:
+  static QString findFullMode(const QString &stubMode, const ModeMap &map);
+  void scaleImage(QImage &image);
+
+
+  QVector<DisplayPanelSimulatorTcpServer *> m_servers;
+  Ui::DisplayPanelSimulatorWidget *m_ui;
+  PortMap            m_ports;
+  QVector<QLedLine *> m_ledLines;
+  Mode               m_mode;
+  QString            m_message;
+  DebugMessages     *m_debugMessages;
+  QLabel            *m_statusLabel;
+  NGL::INGLLogger   &m_logger;
+  QSize              m_charSize;
+};
+