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/bounding_box.cpp

@@ -0,0 +1,170 @@
+/**
+  * @RDE_HEADER@
+  * Interface of AbstractMapObject
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+// Own
+#include "bounding_box.h"
+#include "situation_map_utils.h"
+#include <situation_map_export.h>
+
+
+//----------------------------------------------------------------------------
+namespace SituationMap
+{
+
+
+BoundingBox::BoundingBox(ExtentType extentType)
+{
+  reset();
+  m_extentType = extentType;
+}
+
+BoundingBox::BoundingBox(ExtentType extentType, const Point3D &center, double width, double height)
+  : m_extentType(extentType),
+    m_center(center),
+    m_width(width),
+    m_height(height)
+{
+}
+
+void BoundingBox::reset()
+{
+  m_extentType = ExtentType::Undefined;
+
+  m_center = Point3D();
+  m_width = m_height = std::numeric_limits<double>::lowest();
+}
+
+BoundingBox::ExtentType BoundingBox::extentType() const
+{
+  return m_extentType;
+}
+
+void BoundingBox::setExtentType(BoundingBox::ExtentType extentType)
+{
+  m_extentType = extentType;
+}
+
+bool BoundingBox::isValid() const
+{
+  return
+    m_extentType != ExtentType::Undefined &&
+    !m_center.isNull() &&
+    m_width != std::numeric_limits<double>::lowest() &&
+    m_height != std::numeric_limits<double>::lowest();
+}
+
+Point3D BoundingBox::center() const
+{
+  return m_center;
+}
+
+double BoundingBox::width() const
+{
+  return m_width;
+}
+
+double BoundingBox::height() const
+{
+  return m_height;
+}
+
+
+Point3D BoundingBox::topLeft() const
+{
+  return Point3D(m_center.x() - width() / 2.0,
+                 m_center.y() + height() / 2.0,
+                 m_center.z());
+}
+
+Point3D BoundingBox::topRight() const
+{
+  return Point3D(m_center.x() + width() / 2.0,
+                 m_center.y() + height() / 2.0,
+                 m_center.z());
+}
+
+Point3D BoundingBox::bottomLeft() const
+{
+  return Point3D(m_center.x() - width() / 2.0,
+                 m_center.y() - height() / 2.0,
+                 m_center.z());
+}
+
+Point3D BoundingBox::bottomRight() const
+{
+  return Point3D(m_center.x() + width() / 2.0,
+                 m_center.y() - height() / 2.0,
+                 m_center.z());
+}
+
+Point3D BoundingBox::centerRight() const
+{
+  return Point3D(m_center.x() + width() / 2.0,
+                 m_center.y(),
+                 m_center.z());
+}
+
+
+PositionCont BoundingBox::positions() const
+{
+  PositionCont posCont;
+  posCont.reserve(4);
+
+  posCont.append(topLeft());
+  posCont.append(topRight());
+  posCont.append(bottomRight());
+  posCont.append(bottomLeft());
+
+  return posCont;
+}
+
+
+QString BoundingBox::toString() const
+{
+  QString asString = toString(m_extentType);
+  asString += QStringLiteral(" center=(%1;%2;%3), width=%4, height=%5")
+              .arg(m_center.x()).arg(m_center.y()).arg(m_center.z()).arg(m_width).arg(m_height);
+  return asString;
+}
+
+
+QString BoundingBox::toString(BoundingBox::ExtentType value)
+{
+  switch (value)
+  {
+  case BoundingBox::ExtentType::Undefined:
+    return QLatin1String("Undefined");
+  case BoundingBox::ExtentType::Sim:
+    return QLatin1String("Sim");
+  case BoundingBox::ExtentType::Pixel:
+    return QLatin1String("Pixel");
+  } // switch
+  return QLatin1String("BoundingBox::ExtentTypeERROR");
+}
+
+
+//-----------------------------------------------------------------------------
+// output operator:
+//-----------------------------------------------------------------------------
+std::ostream &operator<< (std::ostream   &stream,
+                          const BoundingBox &value)
+{
+  stream << value.toString();
+  return stream;
+}
+
+std::ostream &operator<< (std::ostream   &stream,
+                          const BoundingBox::ExtentType &value)
+{
+  stream << BoundingBox::toString(value);
+  return stream;
+}
+
+
+} // namespace SituationMap
+