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_operating_condition.h

@@ -0,0 +1,78 @@
+/**
+  * Handler for all Language HMI objects
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Hanna E. Rathje, SLSE, 2015-09-03
+  */
+#pragma once
+
+#include <QObject>
+#include <QMap>
+#include "handler_vehicle.h"
+#include "dds_handler.h"
+#include "control_unit_handler.h"
+#include "logger.h"
+
+namespace EffectShowClient
+{
+class MainHandler;
+class HandlerOperatingCondition : public QObject
+  , protected Interface::Fts::SendAmmunitionRequestHandler
+  , protected Interface::Fts::SendSafetyRevokeRequestHandler
+  , protected Interface::Fts::SendReadinessRequestHandler
+{
+  Q_OBJECT
+public:
+  explicit HandlerOperatingCondition(MainHandler *mainHandler,
+                                     QObject *parent = nullptr);
+
+  ~HandlerOperatingCondition();
+
+  bool init();
+  void sendStatus();
+
+private slots:
+  void onVehicleBattery(double battery);
+  void onVehicleSmokeCardridgesFireStatus(const CardRidges  &fireStatus);
+  void onVehicleSmokeCardridgesStatus(const CardRidges  &fireStatus);
+  void onVehicleFireUnits(const CardRidges  &fireStatus);
+  void onVehicleErrorStatus(const CardRidges  &errorStatus);
+  void onVehicleType(const EffectShowManagement::Feature_e &type);
+  void onConnectionToSerial();
+  void onSafetyStatus(const SafetyStatus &status);
+  void onVehicleRoundCount(int loadedRounds);
+  void onVolleyRounds(int usedRounds);
+  void onOperationalStatusTimeout();
+
+  /**
+   * @brief Get vehicle status
+   * @param vehicleStatus Status of the vehicle needed by telegram: DMF-Einsatzbereitschafts-Status
+   */
+  void getVehicleStatus(ConvertToTab::VehicleStatus_t &vehicleStatus);
+
+
+private:
+  void onSendAmmunitionRequest(const rti::core::SampleIdentity &cookie,
+                               const SendAmmunitionRequest &request);
+  void onSendSafetyRevokeRequest(const rti::core::SampleIdentity &cookie,
+                                 const SendSafetyRevokeRequest &request);
+  void onSendReadinessRequest(const rti::core::SampleIdentity &cookie,
+                              const SendReadinessRequest &request);
+
+  bool isErrorDmf();
+
+private:
+  MainHandler *m_mainHandler{nullptr};
+  CardRidges  m_readyCardridges;
+  CardRidges  m_smokingCardridges;
+  bool        m_isOperational;
+  bool        m_oldErrorState;
+
+  QTimer *m_operationalStatusTimer{nullptr};
+
+  NGL::INGLLogger &m_logger;
+
+  EffectShowClient::OperatingConditionEntity m_operatingCondition;
+};
+}