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/Tests/SitMapTestApp/nglsettings.h

@@ -0,0 +1,63 @@
+/**
+  * @RDE_HEADER@
+  * Settings for sitMapTestApp
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+#pragma once
+
+#include <QString>
+#include <nglsettings/nglsettings_settings.h>
+#include <Map/text_style.h>
+#include <Map/grid.h>
+
+
+namespace NGL {
+  class Settings;
+}
+
+namespace MAP
+{
+namespace Settings
+{
+  // read map settings
+  double mapBasePointX();
+  double mapBasePointY();
+  double mapCenterPointX();
+  double mapCenterPointY();
+  int mapWkid();
+  double mapObjectsTextScale();
+  double mapScale();
+  bool mapGridVisible();
+  bool mapFunctionDialogVisible();
+  QString mapGridType();
+  double mapRotationDegree();
+  QString mapSymbologyType();
+  QString mapURL();
+  QString centerPointMgrs() ;
+  QString basePoint();
+  int XMin();
+  int YMin();
+  int XMax();
+  int YMax();
+
+// general functions for map objects
+  QString objectIdentifier(const QString &prefix, int id);
+  bool getObjectBoolAttribute(const QString &prefix, const QString &postfix, int objId, bool defaultValue = false);
+  int getObjectIntAttribute(const QString &prefix, const QString &postfix, int objId, int defaultValue = 0);
+  QString getObjectStringAttribute(const QString &prefix, const QString &postfix, int objId, const QString &defaultValue = QString());
+  QPointF getPoint(const QString &prefix, int objId, int nr );
+
+// conversion functions from strings
+  SituationMap::LinePattern getLinePattern(const QString &pattern);
+  SituationMap::FillPattern getFillPattern(const QString &pattern);
+  SituationMap::GridType getGridType(const QString &pattern);
+
+  //!< The real NGL::Settings - object
+  NGL::Settings *settings();
+
+}
+};
+
+