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/Services/CentralEffectSimulation/Plugins/Explosions/settings.cpp

@@ -0,0 +1,60 @@
+/**
+  * Settings for CentralEffectSimulation
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#include "settings.h"
+
+#include <QtCore/QSettings>
+#include <QtCore/QVariant>
+#include <nglsettings/nglsettings_settings.h>
+#include <ngltools/ngltools_filesystem.h>
+
+namespace CesExplosions
+{
+class NGLSettingsClass : public NGL::Settings
+{
+public:
+  NGLSettingsClass()
+    : NGL::Settings(s_iniFile.isEmpty() ? NGL::findProjectConfigFile() : s_iniFile)
+  {}
+  static void setIniFile(const QString &fn)
+  {
+    s_iniFile = fn;
+  }
+  static QString s_iniFile;
+};
+QString NGLSettingsClass::s_iniFile;
+Q_GLOBAL_STATIC(NGLSettingsClass, s)
+
+//-----------------------------------------------------------------------------
+NGL::Settings *Settings::settings()
+{
+  return s();
+}
+//-----------------------------------------------------------------------------
+void Settings::setIniFile(const QString &ini)
+{
+  NGLSettingsClass::setIniFile(ini);
+}
+
+//-----------------------------------------------------------------------------
+
+float Settings::vulcanoViewAngleDeg()
+{
+  return s()->settings()->value(QStringLiteral("CesExplosions/Vulcano/ViewAngle"), 12.0).toFloat();
+}
+
+float Settings::vulcanoAttackAngleDeg()
+{
+  return s()->settings()->value(QStringLiteral("CesExplosions/Vulcano/AttackAngle"), 3.8).toFloat();
+}
+
+float Settings::vulcanoMaximumDesignationAngleDeg()
+{
+  return s()->settings()->value(QStringLiteral("CesExplosions/Vulcano/MaximumDesignationAngle"), 60.0).toFloat();
+}
+
+} // namespace CesExplosions