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/main_handler.cpp

@@ -0,0 +1,132 @@
+/**
+  * MainHandler for Buildings
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Christian Ehrlicher, SLSE, 2016-04-14
+  */
+
+#include "main_handler.h"
+#include "settings.h"
+#include <DDS/Core/pacemaker.h>
+#include <AssetManagement/asm_dtc.h>
+#include <QObject>
+
+namespace Buildings
+{
+MainHandler::MainHandler(QObject *parent)
+  : QObject(parent)
+  , m_logger(getLogger("MainHandler"))
+{}
+
+MainHandler::~MainHandler()
+{
+  m_bcHandler = nullptr;
+  m_ismHandler = nullptr;
+  m_pdmHandler = nullptr;
+  m_ppmHandler = nullptr;
+  m_ddsHandler = nullptr;
+  m_dbHandler = nullptr;
+  m_relayInfoHandler = nullptr;
+  m_webSocketHandler = nullptr;
+}
+
+bool MainHandler::init(int domainId, int exerciseId)
+{
+  bool bRet = initInternal(domainId, exerciseId);
+
+
+  DEBUG_LOG(m_logger) << "WebSocketInterfaceHandler initialized Port=" << m_webSocketHandler->listenPort();
+  m_ddsHandler->pacemaker()->addPort(m_webSocketHandler->listenPort(), Core::PortType::WebSocketServer);
+
+  if (bRet)
+  {
+    DEBUG_LOG(m_logger) << "svcBuildings successfully initialized";
+    m_ddsHandler->pacemaker()->setNewState(Core::RunningState::Running);
+  }
+  else
+  {
+    ERROR_LOG(m_logger) << "Error initializing svcBuildings...";
+    if (m_ddsHandler && m_ddsHandler->pacemaker())
+      m_ddsHandler->pacemaker()->setNewState(Core::RunningState::StartingError);
+  }
+  return bRet;
+}
+
+bool MainHandler::initInternal(int domainId, int exerciseId)
+{
+  INFO_LOG(m_logger) << "MainHandler::init domainId = " << domainId
+                      << " exerciseId = " << exerciseId;
+
+  m_dbHandler = std::make_shared<DbHandler>();
+  if (!m_dbHandler->init(exerciseId, Settings::settings()))
+  {
+    ERROR_LOG(m_logger) << "Could not init DbHandler";
+    return false;
+  }
+  INFO_LOG(m_logger) << "DbHandler initialized";
+
+  // initialize DDS
+  m_ddsHandler = std::make_shared<DdsHandler>(domainId, exerciseId);
+  if (!m_ddsHandler->init())
+    return false;
+
+  m_ismHandler = std::make_shared<IsmHandler>(this);
+  if (!m_ismHandler->init())
+    return false;
+
+  m_pdmHandler = std::make_shared<PdmHandler>(this);
+
+  m_bcHandler = std::make_shared<BuildingControlHandler>(this);
+  if (!m_bcHandler->init())
+    return false;
+
+  m_ppmHandler = std::make_shared<PpmHandler>(this);
+  if (!m_ppmHandler->init())
+    return false;
+
+  m_relayInfoHandler = std::make_shared<RelayInfoHandler>(this);
+  if (!m_relayInfoHandler->init())
+    return false;
+
+  // WebSocketServer
+  m_webSocketHandler = std::make_shared<WebSocketHandler>(m_bcHandler,this);
+
+  if (!m_webSocketHandler->init(Settings::getWebSocketServerPortRange(1)))
+    return false;
+
+  QObject::connect(m_ismHandler.get(), &IsmHandler::buildingChanged,
+                   m_bcHandler.get(), &BuildingControlHandler::onBuildingChanged);
+  QObject::connect(m_ismHandler.get(), &IsmHandler::buildingRemoved,
+                   m_bcHandler.get(), &BuildingControlHandler::onBuildingRemoved);
+  QObject::connect(m_ismHandler.get(), &IsmHandler::setEffectStates,
+                   m_bcHandler.get(), &BuildingControlHandler::setEffectStates);
+
+  m_asmDtc = AssetManagement::Interface::Dtc::create(ddsHandler()->ddsConnector());
+
+  auto cbRelayInfos = [this](const AssetManagement::RelayInfo & c)
+  {
+    m_bcHandler->onRelayInfoChanged(c, DataModification::eAdded);
+  };
+
+  m_asmDtc->waitForHistoricalDataRelayInfo();
+  m_asmDtc->relayInfos(cbRelayInfos);
+
+  QObject::connect(m_asmDtc.get(), &AssetManagement::Interface::Dtc::relayInfoChanged,
+                   m_bcHandler.get(), &BuildingControlHandler::onRelayInfoChanged);
+
+  return true;
+}
+
+int MainHandler::exerciseId() const
+{
+  return m_ddsHandler->ddsConnector()->getPartitionId();
+}
+
+std::shared_ptr<DatabaseInterface> MainHandler::db() const
+{
+  return m_dbHandler->db();
+}
+
+
+} // namespace Buildings