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/VideoOverlayManagement/handler_participant_data.cpp

@@ -0,0 +1,130 @@
+/**
+  * Handler for player data
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by hjl, SLSE, 2016-07-05
+  */
+
+#include "handler_participant_data.h"
+#include "settings.h"
+
+#include <QSet>
+
+using namespace VideoOverlayManagement;
+
+HandlerParticipantData::HandlerParticipantData(const std::shared_ptr<DdsHandler> &ddsHandler, QObject *parent)
+  : QObject(parent)
+  , m_ddsHandler(ddsHandler)
+  , m_logger(getLogger("HandlerParticipantData"))
+{
+} // end of ctor()
+//-----------------------------------------------------------------------------
+
+HandlerParticipantData::~HandlerParticipantData()
+{
+} // end of dtor()
+//-----------------------------------------------------------------------------
+
+bool HandlerParticipantData::init()
+{
+  // DTC ParticipantManagement
+  m_dtc = ParticipantManagement::Interface::Dtc::create(m_ddsHandler->dds());
+  if (m_dtc == nullptr)
+  {
+    ERROR_LOG(m_logger) << "Could not create DTC ParticipantManagement";
+    return false;
+  }
+
+  // only subscribe to the topics we're interested in
+  if (!m_dtc->enableParticipant() || !m_dtc->enableParticipantPosition())
+  {
+    ERROR_LOG(m_logger) << "init() DTC ParticipantManagement failed";
+    return false;
+  }
+
+  // Get 'static' data for all participants (playerdata)
+  // Subsribe for ParticipantChanged
+  connect(m_dtc.get(), &ParticipantManagement::Interface::Dtc::participantChanged,
+          this, &HandlerParticipantData::onParticipantChanged);
+  // Player in Referenzmap eintragen
+  m_dtc->participants([this](const ParticipantManagement::Participant &p) { onParticipantChanged(p, DataModification::eAdded);});
+
+  // Get last position ('dynamic' data) of all participants
+  // Subsribe for participantPositionChanged
+  connect(m_dtc.get(), &ParticipantManagement::Interface::Dtc::participantPositionChanged,
+          this, &HandlerParticipantData::onParticipantPositionChanged);
+  // Position in ParticipantsPositionMap eintragen
+  auto cbParticipantPos = [this](const ParticipantManagement::ParticipantPosition &participantPos)
+  {
+    m_participantsPositionMap.insert(participantPos.participantId(), participantPos.roomId());
+  };
+  m_dtc->participantPositions(cbParticipantPos);
+
+  INFO_LOG(m_logger) << "HandlerParticipantData::init() finished. "
+                     << " m_partId2EquipNoMap.size(): " << m_partId2EquipNoMap.size()
+                     << " m_participantsPositionMap.size(): " << m_participantsPositionMap.size();
+  return true;
+} // end of init()
+//-----------------------------------------------------------------------------
+
+int HandlerParticipantData::getEquipmentNumber(int participantId) const
+{
+  return m_partId2EquipNoMap.value(participantId);
+} // end of getEquipmentNumber()
+//-----------------------------------------------------------------------------
+
+QMap<int, int> HandlerParticipantData::getAllAssignedParticipants() const
+{
+  QMap<int, int> qMap;
+  for (auto i = m_participantsPositionMap.begin(); i != m_participantsPositionMap.end(); ++i)
+  {
+    if (i.value() > 0)
+      qMap.insert(i.key(), i.value());
+  }
+  return qMap;
+} // end of getAllAssignedParticipants()
+//-----------------------------------------------------------------------------
+
+void HandlerParticipantData::onParticipantChanged(const ParticipantManagement::Participant &data, DataModification modType)
+{
+  INFO_LOG(m_logger) << "onParticipantChanged() participantId:" << data.id();
+
+  if (modType != DataModification::eRemoved && data.equipmentNumber().is_set())
+    m_partId2EquipNoMap.insert(data.id(), data.equipmentNumber().get());
+  else
+    m_partId2EquipNoMap.remove(data.id());
+
+  if (m_logger.isDebugEnabled())
+  {
+    for (auto i = m_partId2EquipNoMap.begin(); i != m_partId2EquipNoMap.end(); ++i)
+      DEBUG_LOG(m_logger) << " partId2EquipNoMap.size(): " << m_partId2EquipNoMap.size()
+                          << " partId: " << i.key()
+                          << " eqNo: " << i.value();
+  }
+} // end of onParticipantChanged()
+//-----------------------------------------------------------------------------
+
+void HandlerParticipantData::onParticipantPositionChanged(const ParticipantManagement::ParticipantPosition &data, DataModification modType)
+{
+  const int newRoomId = data.roomId();
+  // get reference to room (will be created if not exist)
+  int &roomId = m_participantsPositionMap[data.participantId()];
+  // remember old room
+  const int oldRoomId = roomId;
+  // assing new room
+  roomId = modType == DataModification::eRemoved ? 0 : newRoomId;
+  if (newRoomId != oldRoomId)
+    emit participantPositionChanged(oldRoomId, newRoomId, data.participantId());
+
+  INFO_LOG(m_logger) << "onParticipantPositionChanged()"
+                     << " oldRoomId: " << oldRoomId
+                     << " newRoomId: " << newRoomId
+                     << " participantId: " << data.participantId();
+
+  if (modType == DataModification::eRemoved)
+    m_participantsPositionMap.remove(data.participantId());
+
+} // end of onParticipantPositionChanged()
+//-----------------------------------------------------------------------------
+