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/map_notifier.cpp

@@ -0,0 +1,84 @@
+/**
+  * @RDE_HEADER@
+  * MapNotifier
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+
+// Own
+#include "map_notifier.h"
+#include "map.h"
+
+
+// Qt
+
+
+namespace SituationMap
+{
+QPointer<MapNotifier> MapNotifier::createMapNotifier(Map *map, QObject *parent)
+{
+  if (!map)
+    return nullptr;
+  if (!parent)
+    return nullptr;
+
+  MapNotifier *ptr = new MapNotifier(parent);
+  ptr->setMap(map);
+  return ptr;
+}
+
+void MapNotifier::run()
+{
+  if (m_map.isNull())
+  {
+    qCritical() << "no map";
+    return;
+  }
+
+  //
+  // signal mapReady
+  //
+  if (m_map->isReady())
+    onMapReady();
+  else
+    connect(m_map.data(), &SituationMap::Map::mapReady,
+            this, &MapNotifier::onMapReady, Qt::UniqueConnection);
+
+  //
+  // signal mapReadyAndSymbolDictionaryLoaded
+  //
+  if (m_map->isReady() && m_map->isSymbolDictionaryLoaded())
+    onMapReadyAndSymbolDictionaryLoaded();
+  else
+    connect(m_map.data(), &SituationMap::Map::mapReadyAndSymbolDictionaryLoaded,
+            this, &MapNotifier::onMapReadyAndSymbolDictionaryLoaded, Qt::UniqueConnection);
+}
+
+
+void MapNotifier::setMap(Map *map)
+{
+  m_map = map;
+}
+
+const QPointer<Map> MapNotifier::map()
+{
+  return m_map;
+}
+
+void MapNotifier::onMapReady()
+{
+//  qCritical() << "emit mapReady()";
+  emit mapReady();
+}
+
+void MapNotifier::onMapReadyAndSymbolDictionaryLoaded()
+{
+//  qCritical() << "emit mapReadyAndSymbolDictionaryLoaded(), this=" << this;
+  emit mapReadyAndSymbolDictionaryLoaded();
+}
+
+
+} // namespace SituationMap
+