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/MapObjects/sound_area.h

@@ -0,0 +1,123 @@
+/**
+  * @RDE_HEADER@
+  * Interface of SoundArea
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#pragma once
+
+#include "abstract_multi_point_map_object.h"
+#include <Map/abstract_effect_simulation.h>
+
+//----------------------------------------------------------------------------
+namespace SituationMap
+{
+
+class MarkerData
+{
+public:
+  MarkerData() = default;
+
+  /// ctor for marker
+  MarkerData(MarkerSymbolType _markerSymbolType, int _proxyMarkerSize, const QColor &_markerColor)
+    : m_proxyMarker(_markerSymbolType), m_proxyMarkerSize(_proxyMarkerSize), m_proxyMarkerColor(_markerColor)
+  {}
+
+  /**
+   * @brief proxyImage to set a proxy image be displayed on the map (instead of marker)
+   * @param _proxyImage proxy image be displayed on the map
+   * @param _proxyImageDefaultSize default size image if (user) scale is 1.0.
+   * The image will be scaled to the proxyImageDefaultSize * scale.
+   * To ensure that the image will be displayed with high resolution, the proxyImage must have this resolution.
+   * Example:
+   * Set an image of QSize(100,100), and set a proxyImageDefaultSize of QSize(20,20).
+   * Initially (scale = 1.0) the image will be downscaled to QSize(20,20).
+   * If the user increases the scale to 4.0, the image will be scaled to QSize(80,80)
+   * This should ensure a good image quality.
+   */
+  MarkerData(const QImage &_proxyImage, const QSize &_proxyImageDefaultSize)
+    : m_proxyImage(_proxyImage)
+    , m_proxyImageDefaultSize(_proxyImageDefaultSize)
+  {}
+
+  /**
+   * @brief operator== Compare two objects
+   * @param other to be compared with
+   * @return true if identical, otherwise false.
+   */
+  bool operator==(const MarkerData &other) const
+  {
+    return ((this->m_proxyImage       == other.m_proxyImage) &&
+            (this->m_proxyMarkerSize  == other.m_proxyMarkerSize) &&
+            (this->m_proxyMarkerColor == other.m_proxyMarkerColor) &&
+            (this->m_proxyMarker      == other.m_proxyMarker)
+           );
+  }
+
+  /**
+   * @brief operator!= Compare two objects
+   * @param other to be compared with
+   * @return true if NOT identical, otherwise false.
+   */
+  bool operator!=(const MarkerData &other) const
+  {
+    return !(*this == other);
+  }
+
+  bool hasMarker()      const   {   return m_proxyMarker != MarkerSymbolType::Undefined;  }
+  bool hasProxyImage()  const   {   return !m_proxyImage.isNull();                        }
+  QImage proxyImage()   const   {   return m_proxyImage;                                  }
+  bool isEmpty()        const   {   return !hasMarker() && !hasProxyImage();            }
+
+  QString toString() const
+  {
+    QString str = QLatin1String("GeoImage(");
+    if (m_proxyImage.isNull())
+      str.append(QLatin1String("noProxyImage, "));
+    else
+      str.append(QLatin1String("withProxyImage, "));
+    return str;
+  }
+
+protected:
+  friend class SoundAreaImpl;
+  MarkerSymbolType  m_proxyMarker{MarkerSymbolType::Undefined};
+  int               m_proxyMarkerSize{20};
+  QColor            m_proxyMarkerColor{Qt::red};
+  QImage            m_proxyImage;                                ///< if not set, marker will be used
+  QSize             m_proxyImageDefaultSize;
+
+};
+
+
+/**
+ * @brief The SoundArea class supports SoundArea.
+ */
+class SoundArea : public virtual AbstractMultiPointMapObject, public virtual AbstractEffectSimulation
+{
+
+public:
+  SoundArea()  ///< Contructor
+    : AbstractMultiPointMapObject(), AbstractEffectSimulation()
+  {}
+
+  virtual ~SoundArea() = default;  ///< Destructor
+
+  /*! \name Point symbol */
+  //@{
+  virtual Point3D markerOrigin() const = 0;
+  virtual void setMarkerOrigin(const Point3D &origin) = 0;
+
+  virtual const MarkerData &markerData() const = 0;
+  virtual void setMarkerData(const MarkerData &markerData) = 0;
+  //@}
+
+
+};
+
+
+
+
+} // namespace SituationMap