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/Proxies/CombatNetRadio/training_area.cpp

@@ -0,0 +1,95 @@
+/**
+  * @RDE_HEADER@
+  * TrainingArea
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Christian Fröbel, NLE, 2019-08-02
+  */
+
+#include "training_area.h"
+#include "WebSocketInterface/Messages/reply_message.h"
+#include "helper.h"
+#include <LtsCoordTrans/lts_coord_trans.h>
+#include <LtsUtilsCore/json_object.h>
+#include <AssetManagement/asm_dtc.h>
+#include <InfrastructureManagement/ism_dtc.h>
+#include <QtGlobal>
+#include <QPointF>
+
+namespace CombatNetRadio
+{
+
+TrainingArea::TrainingArea(int trainingAreaId, AssetManagement::Interface::Dtc *asmDtc, InfrastructureManagement::Interface::Dtc *ismDtc)
+  : m_logger(getLogger("TrainingArea"))
+{
+  Q_ASSERT(trainingAreaId > 0);
+  Q_ASSERT(asmDtc);
+  Q_ASSERT(ismDtc);
+
+  getTrainingArea(trainingAreaId, asmDtc);
+  getRadioStations(ismDtc);
+}
+
+void TrainingArea::getTrainingArea(int trainingAreaId, AssetManagement::Interface::Dtc *asmDtc)
+{
+  AssetManagement::TrainingArea ddsTrainingArea = asmDtc->trainingArea(trainingAreaId);
+
+  m_trainingAreaData.designation = QString::fromStdString(ddsTrainingArea.name());
+  m_trainingAreaData.id = trainingAreaId;
+  m_trainingAreaData.refPoint.lat = -1.;
+  m_trainingAreaData.refPoint.lon = -1.;
+
+  WebSocketInterface::Messages::ReplyMessage::LonLatPoint point;
+
+  // bottom left
+  LtsCoordTrans::UtmCoordinate utmCoordinate = LtsCoordTrans::UtmCoordinate::fromGeographic(ddsTrainingArea.bottomLeft().lon(), ddsTrainingArea.bottomLeft().lat());
+  point.lat = toDeg(ddsTrainingArea.bottomLeft().lat());
+  point.lon = toDeg(ddsTrainingArea.bottomLeft().lon());
+  m_trainingAreaData.path << point;
+
+  // bottom right
+  QPointF coord = utmCoordinate.geographic(ddsTrainingArea.width());
+  point.lon = toDeg(coord.x());
+  point.lat = toDeg(coord.y());
+  m_trainingAreaData.path << point;
+
+  // upper right
+  coord = utmCoordinate.geographic(ddsTrainingArea.width(), ddsTrainingArea.height());
+  point.lon = toDeg(coord.x());
+  point.lat = toDeg(coord.y());
+  m_trainingAreaData.path << point;
+
+  // upper left
+  coord = utmCoordinate.geographic(0, ddsTrainingArea.height());
+  point.lon = toDeg(coord.x());
+  point.lat = toDeg(coord.y());
+  m_trainingAreaData.path << point;
+}
+
+void TrainingArea::getRadioStations(InfrastructureManagement::Interface::Dtc *ismDtc)
+{
+  auto cb = [this](const InfrastructureManagement::MainStructureElement &mse)
+  {
+    if (mse.structureElementTypeId() != InfrastructureManagement::StructureElementType::RadioStation || mse.isDeleted())
+      return;
+
+    WebSocketInterface::Messages::RadioStationMessage::RadioStationData data;
+    data.id = stationId(mse);
+    if (data.id == 0)
+    {
+      WARNING_LOG(m_logger) << "Got MainStructureElement of type 'RadioStation' but property 'stationId' was not set"
+                            << " - database id: " << mse.id() << " - ignoring!";
+      return;
+    }
+    data.geoPoint.lon = toDeg(mse.geoPosition().lon());
+    data.geoPoint.lat = toDeg(mse.geoPosition().lat());
+    data.trainingAreaId = m_trainingAreaData.id;
+    data.designation = QString::fromStdString(mse.name());
+
+    m_radioStations.push_back(data);
+  };
+  ismDtc->mainStructureElements(cb);
+}
+
+} // namespace CombatNetRadio