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/Buildings/ppm_handler.cpp

@@ -0,0 +1,86 @@
+/**
+  * Convert internal gear and charge id to and from tas ids
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Christian Ehrlicher, SLSE, 2016-04-14
+  */
+
+#include "ppm_handler.h"
+#include "main_handler.h"
+
+namespace Buildings
+{
+PpmHandler::PpmHandler(MainHandler *mainHandler)
+  : m_mainHandler(mainHandler)
+  , m_logger(getLogger("PpmHandler"))
+{}
+
+PpmHandler::~PpmHandler()
+{}
+
+bool PpmHandler::init()
+{
+  m_ppmDtc = ParticipantManagement::Interface::Dtc::create(m_mainHandler->ddsHandler()->ddsConnector());
+  connect(m_ppmDtc.get(), &ParticipantManagement::Interface::Dtc::equipmentExerciseMappingChanged,
+          this, &PpmHandler::onEquipmentExerciseMappingChanged);
+  connect(m_ppmDtc.get(), &ParticipantManagement::Interface::Dtc::participantPositionChanged,
+          this, &PpmHandler::onParticipantPositionChanged);
+  if (!m_ppmDtc->enableEquipmentExerciseMapping())
+  {
+    ERROR_LOG(m_logger) << "Can not read equipment/exercise mappings from PPM";
+    return false;
+  }
+  if (!m_ppmDtc->enableParticipantPosition())
+  {
+    ERROR_LOG(m_logger) << "Can not read ParticipantPositions from PPM";
+    return false;
+  }
+  return true;
+}
+
+int PpmHandler::equipmentNumberToParticipantId(int equipmentNumber) const
+{
+  const int ret = m_equipmentNumber2ParticipantId.value(equipmentNumber, -1);
+  if (ret < 0)
+    WARNING_LOG(m_logger) << "Can not map equipment number " << equipmentNumber << " to a valid participant id - using -1";
+  return ret;
+}
+
+ParticipantManagement::ParticipantPosition PpmHandler::participantPosition(int participantId) const
+{
+  return m_participantPositions.value(participantId);
+}
+
+void PpmHandler::onEquipmentExerciseMappingChanged(const ParticipantManagement::EquipmentExerciseMapping &data, DataModification modType)
+{
+  if (data.exerciseId() != m_mainHandler->exerciseId())
+    return;
+
+  m_equipmentNumber2ParticipantId.clear();
+  switch (modType)
+  {
+  case DataModification::eAdded:
+  case DataModification::eModified:
+    for (const ParticipantManagement::Equipment2ParticipantId &e2p : data.mapping())
+      m_equipmentNumber2ParticipantId[e2p.equipmentNumber()] = e2p.participantId();
+    break;
+  case DataModification::eRemoved:
+    break;
+  }
+}
+
+void PpmHandler::onParticipantPositionChanged(const ParticipantManagement::ParticipantPosition &data, DataModification modType)
+{
+  switch (modType)
+  {
+  case DataModification::eAdded:
+  case DataModification::eModified:
+    m_participantPositions[data.participantId()] = data;
+    break;
+  case DataModification::eRemoved:
+    m_participantPositions.remove(data.participantId());
+    break;
+  }
+}
+} // namespace Buildings