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/TrainingAreaBase/Plugins/UAS/plugin.cpp

@@ -0,0 +1,56 @@
+/**
+  * UAS Plugin Interface Factory
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Mike Wille, ESZS, 2025-04-17
+  */
+
+#include "plugin.h"
+#include "plugin_instance.h"
+
+#include <nglsettings/nglsettings_settings.h>
+
+#include <QSettings>
+#include <QDebug>
+
+
+namespace UAS
+{
+std::shared_ptr<TrainingAreaBase::Plugin::Interface> TabPluginUAS::createInterface(TrainingAreaBase::Plugin::DataProvider *dataProvider,
+                                                                                   const std::shared_ptr<TrainingAreaBase::RecvFromTab> &recvFromTabCb,
+                                                                                   const std::shared_ptr<TrainingAreaBase::TxMixin> &,
+                                                                                   const std::shared_ptr<TrainingAreaBase::DdsHandler> &ddsHandler,
+                                                                                   NGL::Settings *settings)
+{
+  qDebug() << "UAS Plugin starting for ex "<<dataProvider->exerciseId()<<"!\n";
+
+  /* set this on the machine running the TMS-IF TrainingAreaBase plugin, to the
+   * ip address of the interface of the server which is in the same network as the
+   * gateway machines (e.g. Salchau's tds01 is 10.5.144.32 and the gateway machines
+   * are in the same subnet, so enter "10.5.144.32" on tds01) */
+  const QString ip(settings->settings()->value(QStringLiteral("UAS/TmsIfIpAddress"), QStringLiteral("127.0.0.1")).toString()); // 127.0.0.1 if IA runs on the same machine
+  qDebug() << "TabPluginUAS::createInterface: TMS-IF will be started on the network interface with ip address: '" << ip << "' \n";
+  qputenv("CYCLONEDDS_URI", QStringLiteral("<CycloneDDS><Domain><General><Interfaces><NetworkInterface address=\"%1\"></NetworkInterface></Interfaces></General></Domain></CycloneDDS>").arg(ip).toUtf8());
+
+  if ( !hostAvailable(ip))
+    return nullptr;
+
+  return std::make_shared<PluginInstance>(dataProvider, recvFromTabCb, ddsHandler, settings);
+}
+
+bool TabPluginUAS::hostAvailable(QString hostname) {
+
+  // Blocking call: This pauses execution until the lookup is finished
+  QHostInfo info = QHostInfo::fromName(hostname);
+
+  // Check if the lookup was successful
+  if (info.error() == QHostInfo::NoError) {
+    qCritical() << "Success! Host found. IP addresses:" << hostname;
+    return true;
+  }
+  // Handle errors like 'Host not found' or 'Network unreachable'
+  return false;
+}
+
+} // namespace UAS