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/Viewer/SituationMap/Map/map_settings.h

@@ -0,0 +1,151 @@
+/**
+  * @RDE_HEADER@
+  * Interface of AbstractMapObject
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#pragma once
+
+// Own
+#include "situation_map_types.h"
+#include <Common/situation_map_logging.h>
+#include <situation_map_export.h>
+#include <Symbology/symbol_dictionary.h>
+
+// Qt
+#include <QString>
+#include <QSettings>
+
+//----------------------------------------------------------------------------
+namespace SituationMap
+{
+
+/**
+ * @brief The MapSettings class is reading some values from an ini file using the QSettings.
+ * The main use case is the class MapInitializer.
+ */
+class SITUATIONMAP_EXPORT MapSettings : public QObject
+{
+  Q_OBJECT
+public:
+  /*! \name Construction, Destruction */
+  //@{
+
+  /**
+   * @brief Constructor
+   * @param inifile_ABSOLUTE_Path to read
+   */
+  explicit MapSettings(const QString &inifile_ABSOLUTE_Path, QObject *parent = nullptr);
+
+  /**
+   * @brief ~MapSettings destructor
+   */
+  virtual ~MapSettings();
+  //@}
+
+  /**
+   * @brief Get filename
+   * @return filename
+   */
+  QString filename() const;
+
+  /*! \name Functions for error handling */
+  //@{
+  bool hasErrors() const;
+  bool exists() const;
+  bool accessError() const;
+  bool formatError() const;
+  //@}
+
+  /*! \name Get values */
+  //@{
+  QString licenseStr() const;
+  QStringList licenseExtensions();
+
+  EsriNetworkCacheSettings networkCacheSettings();
+
+  QString symbologyTypeStr() const;
+  AdvancedSymbology::SymbologyType symbologyType() const;
+  QString extraSymbolDirectory() const;
+
+  QString     basemapLayernamePrefix();
+  QString     localMapFile();
+  QVector<QPair<QString, QString>> mapUrlsWithNames();
+  QStringList mapUrls();
+  QStringList sceneUrls();
+  QVector<QPair<QString, QString>> sceneUrlsWithNames();
+  QStringList sceneObjectUrls();
+  QStringList elevationUrls();
+
+  QStringList operationalLayers();
+  QString     participantLayername();
+
+  QString     operationalLayerForCubes();
+
+
+  QString centerPointMgrs() const;
+
+  double scale() const;
+  double minScale() const;
+  double maxScale() const;
+  double scaleHasVisibility() const;
+
+  double zoomFactorBase() const;
+
+  QString gridStr() const;
+  GridType gridType() const;
+
+  double animationDuration() const;
+  double rocketDuration() const;
+
+
+
+  bool addMapWidgets() const;
+  bool addSideBar() const;
+
+  QString viewshedUrl() const;
+
+
+  QColor       rubberbandDrawColor() const;
+  QColor       rubberbandFillColor() const;
+  QColor       rubberbandHandleDrawColor() const;
+  QColor       rubberbandHandleFillColor() const;
+  QColor       rubberbandSelectionColor() const;
+  QColor       rubberbandFrameColor() const;
+  QColor       rubberbandFrameFillColor() const;
+  int          rubberbandFrameHandleMargin() const;
+  QPoint       rubberbandPreviewOffset() const;
+  unsigned int rubberbandPreviewSize() const;
+  unsigned int rubberbandPickingRatio() const;
+  unsigned int rubberbandLineHandleWidth() const;
+  //@}
+
+
+  QString toString() const;
+
+protected:
+  QSettings     m_settings;
+
+  LOGGER_T      m_logger;      ///< Interface of the Logging-Facility
+};
+
+
+
+
+//-----------------------------------------------------------------------------
+// output operator:
+//-----------------------------------------------------------------------------
+/**
+ * @brief Output operator
+ * @param stream used to stream into.
+ * @param value to be streamed.
+ * @return appended stream.
+ */
+SITUATIONMAP_EXPORT std::ostream &operator<< (std::ostream   &stream,
+                                              const MapSettings &value);
+
+
+} // namespace SituationMap
+