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/Nmea/plugin.cpp

@@ -0,0 +1,43 @@
+/**
+  * Send / Receive telegrams to/from TX/RX directory
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Christian Ehrlicher, SLSE, 2016-09-26
+  */
+
+#include "plugin.h"
+#include "main_dispatcher.h"
+#include <nglsettings/nglsettings_settings.h>
+
+namespace Nmea
+{
+/*!
+ * \brief TabNmeaPlugin::createInterface
+ * \author Gerlinde Rudolphus und Niklas Schmidt
+ * \brief
+ *  This plugin manage the connection between ComMaster/RadioMaster backpack and Excon
+ * Telegrams:
+ * From Excon to NMEA/ComMaster
+ * - SetPowerDeviceRequest
+ * From NMEA/ ComMaster to Excon
+ * - PositionReport(own position of ComMaster)
+ * - BatteryInfo
+ * - BatteryAlarm
+ * - ServiceControl
+ * \param pdp
+ * \param recvFromTabCb
+ * \param sendToTabCb
+ * \param settings
+ * \return
+ */
+
+std::shared_ptr<TrainingAreaBase::Plugin::Interface> TabNmeaPlugin::createInterface(TrainingAreaBase::Plugin::DataProvider *pdp,
+                                                                                    const std::shared_ptr<TrainingAreaBase::RecvFromTab> &recvFromTabCb,
+                                                                                    const std::shared_ptr<TrainingAreaBase::TxMixin> &sendToTabCb,
+                                                                                    NGL::Settings *settings)
+{
+  Q_UNUSED(sendToTabCb);
+  return std::make_shared<MainDispatcher>(pdp, recvFromTabCb, settings);
+}
+} // namespace Nmea