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/MapObjectsImpl/polygon_impl.cpp

@@ -0,0 +1,75 @@
+/**
+  * @RDE_HEADER@
+  * Interface-Implementation of Polygon
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+// Own
+#include "polygon_impl.h"
+#include <MapImpl/map_impl.h>
+#include <GraphicalObjects/graphical_object_path.h>
+
+
+// ESRI
+
+
+// Qt
+
+
+namespace SituationMap
+{
+
+//-----------------------------------------------------------------------------
+// class PolygonImpl
+//-----------------------------------------------------------------------------
+PolygonImpl::PolygonImpl(const QString &debugInfo)
+  : Polygon()                      // Interface
+  , BaseClass(debugInfo)           // Implementation
+  , m_logger(getLogger("PolygonImpl"))
+{
+  TRACE_LOG(m_logger) << LOGFUNCTION << " START";
+  TRACE_LOG(m_logger) << LOGFUNCTION << " END";
+}
+
+PolygonImpl::~PolygonImpl()
+{
+  TRACE_LOG(m_logger) << LOGFUNCTION << " START";
+  TRACE_LOG(m_logger) << LOGFUNCTION << " END";
+}
+
+
+bool PolygonImpl::updateViewImpl()
+{
+  TRACE_LOG(m_logger) << LOGFUNCTION << " START"
+                      << " visibility=" << m_visibility
+                      << " visiTechn=" << m_visibilityTechnical
+                      << " visiTact=" << m_visibilityTactical;
+
+  bool success = BaseClass::updateViewImpl();
+
+  if (!success)
+    ERROR_LOG(m_logger) << LOGFUNCTION << " updateViewImpl failed";
+
+  TRACE_LOG(m_logger) << LOGFUNCTION << " END, success=" << success;
+  return success;
+}
+
+
+
+bool PolygonImpl::init(MapImpl *mapImpl, const QString &logicalLayerName)
+{
+  TRACE_LOG(m_logger) << LOGFUNCTION << " START";
+
+  bool success = BaseClass::init(mapImpl, logicalLayerName, GraphicalObjectPathType::Polygon);
+
+  if (!success)
+    ERROR_LOG(m_logger) << LOGFUNCTION << " init failed";
+
+  TRACE_LOG(m_logger) << LOGFUNCTION << " END, success=" << success;
+  return success;
+}
+
+
+} // namespace SituationMap