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/fill_style.cpp

@@ -0,0 +1,67 @@
+/**
+  * @RDE_HEADER@
+  * FillStyle
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+// Own
+#include "fill_style.h"
+
+
+// ESRI
+
+
+namespace SituationMap
+{
+
+
+FillStyle::FillStyle(const QColor &fillColor, FillPattern fillPattern)
+  : m_fillColor(fillColor)
+  , m_fillPattern(fillPattern)
+{
+}
+
+FillStyle::FillStyle(FillPattern fillPattern)
+  : m_fillPattern(fillPattern)
+{
+}
+
+QColor FillStyle::fillColor() const
+{
+  return m_fillColor;
+}
+
+void FillStyle::setFillColor(const QColor &fillColor)
+{
+  m_fillColor = fillColor;
+}
+SituationMap::FillPattern FillStyle::fillPattern() const
+{
+  return m_fillPattern;
+}
+
+void FillStyle::setFillPattern(const SituationMap::FillPattern &fillPattern)
+{
+  m_fillPattern = fillPattern;
+}
+
+
+
+//-----------------------------------------------------------------------------
+// output operator:
+//-----------------------------------------------------------------------------
+std::ostream &operator<< (std::ostream   &stream,
+                          const FillStyle &value)
+{
+  QString str;
+  str.append(QStringLiteral(" fillPattern='%1'").arg(static_cast<int>(value.fillPattern())));
+  str.append(QStringLiteral(" fillColor='%1'").arg(value.fillColor().name(QColor::HexArgb)));
+
+  stream << str.toStdString();
+  return stream;
+}
+
+
+} // namespace SituationMap