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/Plugins/TrainingAreaBase/Data/CMakeLists.txt

@@ -0,0 +1,20 @@
+#
+# $Id$
+# $HeadURL$
+# $Author$
+#
+# Created by Dassow Philipp, SLST, 2017-09-19
+#
+
+#
+# Data Plugin
+#
+NGL_ADD_LIBRARY(WS TabDataPlugin MODULE tab_data_plugin.cpp tab_data_plugin.h)
+NGL_TARGET_LINK_LIBRARIES(TabDataPlugin
+  Qt5::Core
+  TabDataPluginInterface
+  svcTabClient
+  NGLLogger
+  LtsSessionDataDds
+)
+NGL_INSTALL_TARGET(TabDataPlugin)

qt5-before/dlbo/Lts/Plugins/TrainingAreaBase/Data/tab_data_plugin.cpp

@@ -0,0 +1,37 @@
+/**
+  * @RDE_HEADER@
+  * Data Plugin for TrainingAreaBase
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Philipp Dassow, SLST, 2017-09-19
+  */
+
+
+#include "tab_data_plugin.h"
+
+#include <DDS/DDSConnector/dds_connector.h>
+#include <LtsSession/lts_session_data_dds.h>
+#include <Proxies/TrainingAreaBase/tab_dtc.h>
+#include <Proxies/TrainingAreaBase/tab_ftc.h>
+
+namespace TrainingAreaBase
+{
+std::shared_ptr<DataPluginBase::Interface> DataPlugin::createDataInterface(LtsSession::LtsSessionDataDds *session)
+{
+  // non-default use-case - only one topic needed
+  std::shared_ptr<Interface::Dtc> dtc = Interface::Dtc::create(session->ddsConnector());
+   std::shared_ptr<Interface::Ftc> ftc = Interface::Ftc::create(session->ddsConnector());
+  dtc->enableConnections();
+  return std::make_shared<DataInterfaceImpl>(dtc , ftc);
+}
+
+
+DataInterfaceImpl::DataInterfaceImpl(const std::shared_ptr<TrainingAreaBase::Interface::Dtc> &dtc,  const std::shared_ptr<TrainingAreaBase::Interface::Ftc> &ftc)
+  : DataInterface()
+  , m_dtc(dtc)
+  , m_ftc(ftc)
+{}
+
+
+} // namespace TrainingAreaBase

qt5-before/dlbo/Lts/Plugins/TrainingAreaBase/Data/tab_data_plugin.h

@@ -0,0 +1,52 @@
+/**
+  * @RDE_HEADER@
+  * Data Plugin for TrainingAreaBase
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Philipp Dassow, SLST, 2017-09-19
+  */
+
+#pragma once
+
+#include <PluginInterfaces/data_plugin_interface.h>
+#include <Plugins/TrainingAreaBase/tab_data_plugin_interface.h>
+
+
+namespace TrainingAreaBase
+{
+
+class DataPlugin final : public QObject, public DataPluginBase::Plugin
+{
+  Q_PLUGIN_METADATA(IID "data:3:tab")
+  Q_INTERFACES(DataPluginBase::Plugin)
+
+  Q_OBJECT
+public:
+  DataPlugin() = default;
+  ~DataPlugin() = default;
+
+  QString pluginName() const override  { return QStringLiteral("TrainingAreaBase"); }
+  std::shared_ptr<DataPluginBase::Interface> createDataInterface(LtsSession::LtsSessionDataDds *session) override;
+  bool availableInPartition(IDL::PartitionType partition) const override
+  {
+    return partition == IDL::PartitionType::Exercise ||
+        partition == IDL::PartitionType::Global;
+  }
+};
+
+
+class DataInterfaceImpl final : public DataInterface
+{
+public:
+  explicit DataInterfaceImpl(const std::shared_ptr<TrainingAreaBase::Interface::Dtc> &dtc, const std::shared_ptr<TrainingAreaBase::Interface::Ftc> &ftc);
+
+  std::shared_ptr<TrainingAreaBase::Interface::Dtc> getDtc() override { return m_dtc; }
+  std::shared_ptr<TrainingAreaBase::Interface::Ftc> getFtc() override { return m_ftc; }
+
+private:
+  std::shared_ptr<TrainingAreaBase::Interface::Dtc> m_dtc;
+  std::shared_ptr<TrainingAreaBase::Interface::Ftc> m_ftc;
+};
+
+} // namespace TrainingAreaBase