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/EffectShowManagement/handler_mdm_data.cpp

@@ -0,0 +1,81 @@
+/**
+  * Subscribe to MeteoDataManagement and provide the correct weather for the given position
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#include "handler_mdm_data.h"
+#include "initialization.h"
+#include <LtsCoordTrans/lts_coord_trans.h>
+#include "settings.h"
+
+using namespace EffectShowManagement;
+//=============================================================================
+HandlerMdmData::HandlerMdmData(const std::shared_ptr<DdsHandler> &ddsHandler,
+                               QObject *parent)
+  : QObject(parent)
+  , m_ddsHandler(ddsHandler)
+  , m_logger(getLogger("HandlerMdmData"))
+{
+}
+
+//=============================================================================
+bool HandlerMdmData::init()
+{
+  DEBUG_LOG(m_logger) << "init() HandlerMdmData";
+  auto dtcMdm = m_ddsHandler->dtcMdm();
+
+  connect(dtcMdm.get(), &MeteoDataManagement::Interface::Dtc::meteoDataChanged,
+          this, &HandlerMdmData::onMeteoDataChanged);
+
+  // Get current data for all weather data
+  {
+    auto cb = [this](const MeteoDataManagement::MeteoData & meteoData)
+    {
+      onMeteoDataChanged(meteoData, DataModification::eAdded);
+    };
+    if (!dtcMdm->meteoDatas(cb))
+      return false;
+  }
+
+  return true;
+}
+//=============================================================================
+bool HandlerMdmData::getNearestWeather(const Core::GeoPosition2D &pos,
+                                       MeteoDataManagement::MeteoData &data) const
+{
+  const LtsCoordTrans::UtmCoordinate utm(LtsCoordTrans::UtmCoordinate::fromGeographic(pos.lon(), pos.lat()));
+  double nearestDistanceSquared = std::numeric_limits<double>::max();
+
+  bool found = false;
+  for (const auto &md : qAsConst(m_meteoData))
+  {
+    if (md.isStaticMeteoData())
+      continue;
+
+    const double distanceSquared = LtsCoordTrans::squareDistance(utm, md.pos().lon(), md.pos().lat());
+
+    if (distanceSquared < nearestDistanceSquared)
+    {
+      found = true;
+      data  = md;
+      nearestDistanceSquared = distanceSquared;
+    }
+  }
+  return found;
+}
+//-----------------------------------------------------------------------------
+void HandlerMdmData::onMeteoDataChanged(const MeteoDataManagement::MeteoData &data, DataModification modType)
+{
+  switch (modType)
+  {
+  case DataModification::eRemoved:
+    m_meteoData.remove(data.id());
+    break;
+  case DataModification::eAdded:
+  case DataModification::eModified:
+    m_meteoData[data.id()] = data;
+    break;
+  }
+}