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/Services/EffectShowClient/handler_tab_data.h

@@ -0,0 +1,70 @@
+/**
+  * Handler for player data
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by gr, SLSE, 2017-02-20
+  */
+
+#pragma once
+
+#include "dds_handler.h"
+#include "logger.h"
+#include "esc_convert_from_tab.h"
+#include "esc_convert_to_tab.h"
+#include <TrainingAreaBase/tab_dtc.h>
+
+namespace EffectShowClient
+{
+
+class MainHandler;
+/**
+  * @brief Handler for data exchange with the Training Aeria Base (TAB) Proxy.
+  *
+  * (1)Receives the telegrams from central operating station via Training Area Base proxy.\n
+  * (2)Sends Telegrams to central operating station via Training Area Base proxy.\n
+  */
+class HandlerTabData : public QObject
+  , protected TrainingAreaBase::Interface::Ftc::SendFireSmokeMarkerDataReplyHandler
+{
+  Q_OBJECT
+public:
+  explicit HandlerTabData(MainHandler *mainHandler,
+                          QObject     *parent = nullptr);
+
+  ~HandlerTabData();
+
+  /**
+    * @brief Receives the relevant telegrams from TAB after service start
+    */
+  bool init();
+
+  /**
+    * @brief Triggers TAB to send order confirmation telegram to central operating station.
+    * @param[in] orderConfirmation Data for order confirmation telegram
+    */
+  void orderConfirmation(const ConvertToTab::OrderConfirmation_t &orderConfirmation);
+
+  /**
+    * @brief Triggers TAB to send the vehicle status telegramm to central operating station.
+    * @param[in] vehicleStatus   Data for vehicle status telegram
+    */
+  void vehicleStatus(const ConvertToTab::VehicleStatus_t &vehicleStatus);
+
+protected:
+  void onSendFireSmokeMarkerDataReply(const Core::FunctionReplyObject &reply) override final;
+
+Q_SIGNALS:
+  void effectShowStopped(qint16 idEffectShow);
+  void effectShowContinued(const ConvertFromTab::EffectShowContinue_t &effectShowContinue);
+
+private Q_SLOTS:
+  void onFireSmokeMarkerDataChanged(const TrainingAreaBase::FireSmokeMarkerData &data, DataModification modType);
+
+private: // attributes
+  MainHandler      *m_mainHandler;
+  NGL::INGLLogger  &m_logger;
+
+};
+} // namespace EffectShowClient
+