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/OcSituationClient/main_handler.cpp

@@ -0,0 +1,161 @@
+/**
+  * MainHandler for OCSituationClient
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Philipp Dassow, NLST, 14-02-2018
+  */
+
+#include "main_handler.h"
+
+#include <DDS/Core/pacemaker.h>
+
+#include "handler_oc_data.h"
+#include "settings.h"
+
+namespace OcSituationClient
+{
+
+MainHandler::MainHandler(QObject *parent)
+  : QObject(parent)
+  , m_ddsHandler(nullptr)
+  , m_handlerOcData(nullptr)
+  , m_dbHandler(nullptr)
+  , m_aesDtc(nullptr)
+  , m_aesFtc(nullptr)
+  , m_evlFtc(nullptr)
+  , m_gimDtc(nullptr)
+  , m_msgDtc(nullptr)
+  , m_msgFtc(nullptr)
+  , m_opmDtc(nullptr)
+  , m_ossDts(nullptr)
+  , m_ossFts(nullptr)
+  , m_ppmDtc(nullptr)
+  , m_ppmFtc(nullptr)
+  , m_tabDtc(nullptr)
+  , m_tabFtc(nullptr)
+  , m_tabocDtc(nullptr)
+  , m_tabocDts(nullptr)
+  , m_logger(getLogger("MainHandler"))
+{}
+
+MainHandler::~MainHandler()
+{
+  m_ddsHandler = nullptr;
+  m_handlerOcData = nullptr;
+  m_dbHandler = nullptr;
+  m_aesDtc = nullptr;
+  m_aesFtc = nullptr;
+  m_evlFtc = nullptr;
+  m_gimDtc = nullptr;
+  m_msgDtc = nullptr;
+  m_msgFtc = nullptr;
+  m_ossDts = nullptr;
+  m_ossFts = nullptr;
+  m_ppmDtc = nullptr;
+  m_ppmFtc = nullptr;
+  m_tabDtc = nullptr;
+  m_tabFtc = nullptr;
+  m_tabocDtc = nullptr;
+  m_tabocDts = nullptr;
+}
+
+bool MainHandler::init(int domainId, int exerciseId)
+{
+  // initialize database
+  m_dbHandler = std::make_shared<DbHandler>();
+
+  if (!m_dbHandler->init(exerciseId, Settings::settings()))
+  {
+    ERROR_LOG(m_logger) << "Initialisation dbHandler failed.";
+    return false;
+  }
+  DEBUG_LOG(m_logger) << "Initialisation dbHandler succesful.";
+
+  // initialize DDS
+  m_ddsHandler = std::make_shared<DdsHandler>(domainId, exerciseId);
+  if (!m_ddsHandler->init())
+  {
+    ERROR_LOG(m_logger) << "Initialisation ddsHandler failed.";
+    return false;
+  }
+  DEBUG_LOG(m_logger) << "Initialisation ddsHandler succesful.";
+
+  // create AES Dtc
+  m_aesDtc = AreaEffectSimulation::Interface::Dtc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created AES Dtc";
+
+  // create AES Ftc
+  m_aesFtc = AreaEffectSimulation::Interface::Ftc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created AES Ftc";
+
+  // create EVL Ftc
+  m_evlFtc = Evaluations::Interface::Ftc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created EVL Ftc";
+
+  // create GIM Dtc
+  m_gimDtc = GuezIedManagement::Interface::Dtc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created GIM Dtc";
+
+  // create MSG Dtc
+  m_msgDtc = Messaging::Interface::Dtc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created MSG Dtc";
+
+  // create MSG Ftc
+  m_msgFtc = Messaging::Interface::Ftc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created MSG Ftc";
+
+  // create OPM Dtc
+  m_opmDtc = OperatorManagement::Interface::Dtc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created OPM Dtc";
+
+  // create OSS Dts
+  m_ossDts = OcSituationServer::Interface::Dts::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created OSS Dts";
+
+  // create OSS Fts
+  m_ossFts = OcSituationServer::Interface::Fts::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created OSS Fts";
+
+  // create PPM Dtc
+  m_ppmDtc = ParticipantManagement::Interface::Dtc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created PPM Dtc";
+
+  // create PPM Ftc
+  m_ppmFtc = ParticipantManagement::Interface::Ftc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created PPM Ftc";
+
+  // create TAB Dtc
+  m_tabDtc = TrainingAreaBase::Interface::Dtc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created TAB Dtc";
+
+  // create TAB Dts
+  m_tabDts = TrainingAreaBase::Interface::Dts::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created TAB Dts";
+
+  // create TAB Ftc
+  m_tabFtc = TrainingAreaBase::Interface::Ftc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created TAB Ftc";
+
+  // create TABOC Dtc
+  m_tabocDtc = TrainingAreaBaseOC::Interface::Dtc::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created TABOC Dtc";
+
+  // create TABOC Dts
+  m_tabocDts = TrainingAreaBaseOC::Interface::Dts::create(m_ddsHandler->dds());
+  DEBUG_LOG(m_logger) << "Created TABOC Dts";
+
+  // create handler oc-data
+  m_handlerOcData = std::make_shared<HandlerOcData>(this, this);
+  if (!m_handlerOcData->init())
+  {
+    ERROR_LOG(m_logger) << "Initialisation HandlerOcData failed.";
+    return false;
+  }
+
+  m_ddsHandler->pacemaker()->setNewState(Core::RunningState::Running);
+
+  return true;
+}
+
+}   // namespace OcSituationClient