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/ApacheHlaJson/plugin.cpp

@@ -0,0 +1,58 @@
+/**
+  * 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 ApHlaJson
+{
+
+//
+// TetraXdrPlugin
+//
+/*!
+ \brief
+ \author Niklas Schmidt
+ \details Plugin to integrate Apache with Hla Enviroment. The plugin receive data from HLA and forward
+          the data to Excon and Tetra.
+         Communication directions:
+- Excon -> Hla
+  -# Init \ref hla_handler_rx.cpp
+  -# VulnerabilityStateChange \ref ppm_handler.cpp
+  -# ParticipantPositionChanged \ref ppm_handler.cpp
+  -# ParticipantChanged \ref ppm_handler.cpp
+  -# SendAllChargeTypes \ref pdm_handler.cpp
+- HLA -> Tetra
+  -# CesHitInformation \ref hla_handler_tx.cpp
+- HLA -> Excon
+  -# PositionReport \ref hla_handler_rx.cpp Defined in \ref training_area_telegrams.cpp
+  -# StateChangeDirect
+  -# StateChange
+  -# StateChangeIndirect
+  -# EquipmentGearEvent
+  -# EquipmentGearAssignment
+  -# EquipmentGearChargeState
+  -# SpecialSensorData
+  -# AesModifyRequest \ref aes_handler.cpp
+  -# ApacheLaserDesignation \ref hla_handler_rx.cpp
+ \param pdp
+ \param recvFromTabCb
+ \param sendToTabCb
+ \param settings
+ \return std::shared_ptr<TrainingAreaBase::Plugin::Interface>
+*/
+std::shared_ptr<TrainingAreaBase::Plugin::Interface> TabApHlaPlugin::createInterface(TrainingAreaBase::Plugin::DataProvider *pdp,
+                                                                                     const std::shared_ptr<TrainingAreaBase::RecvFromTab> &recvFromTabCb,
+                                                                                     const std::shared_ptr<TrainingAreaBase::TxMixin> &sendToTabCb,
+                                                                                     NGL::Settings *settings)
+{
+
+  return std::make_shared<MainDispatcher>(pdp, recvFromTabCb, sendToTabCb, settings);
+}
+} // namespace HlaJson