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/Tools/DdsView/initialisation.cpp

@@ -0,0 +1,58 @@
+/**
+  * Initialisation for Subscriber
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#include "initialisation.h"
+#include "subscriber.h"
+
+#include <DDS/DDSConnector/publisher.h>
+
+namespace DdsView
+{
+
+Initialisation::Initialisation(const dds::domain::DomainParticipant &dp,
+                               int domainId, IDL::PartitionType partitionType,
+                               int exerciseId, TelegramModel *tm)
+  : DDSConnector::DdsConnector(domainId, partitionType, exerciseId)
+  , m_logger(DdsView::getLogger("Initialisation"))
+
+{
+  DEBUG_LOG(m_logger) << "Initialisation for partition: " << getDefaultPartition();
+  initDDS(dp, tm);
+}
+
+void Initialisation::initDDS(const dds::domain::DomainParticipant &dp, TelegramModel *tm)
+{
+  DDSConnector::DdsConnector::init();
+
+  // Initialisation Subscriber
+  setSubscriber(new DdsView::Subscriber(dp, getDefaultPartition(), tm));
+
+  // Initialisation Publisher
+  // Note (!): The publisher has its own domainParticipant
+  setPublisher(new DDSConnector::Publisher(dds::domain::DomainParticipant(getDomainId()), getDefaultPartition()));
+
+  if (getPublisher()->getDomainParticipant() == nullptr)
+    return;
+
+  // Enable DomainParticipant
+  // Default-QoS Configuration for enabled => false (using Qos from DefaultParticipant)
+  dds::domain::DomainParticipant &pubDp = const_cast<dds::domain::DomainParticipant &>(getPublisher()->getDomainParticipant());
+  pubDp->enable();
+}
+
+bool Initialisation::initDDTCs(const QVector<DDSGeneric::TopicDescription> &vDro)
+{
+  DdsView::Subscriber *sub = dynamic_cast<DdsView::Subscriber *>(getSubscriber());
+  return sub ? sub->initDDTCs(vDro) : false;
+}
+
+bool Initialisation::publish(const dds::core::xtypes::DynamicData &data, const std::string &topicName)
+{
+  return getPublisher() ? getPublisher()->write(data, topicName) : false;
+}
+
+} // Namespace DdsView