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/ExerciseManagement/object_exercise.h

@@ -0,0 +1,87 @@
+/**
+  * Exercise object
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+#pragma once
+
+#include <QObject>
+#include "dds_handler.h"
+#include <DDS/Core/function_reply_object.h>
+
+// Generated
+#include <ExerciseManagement/exm_db.h>
+
+namespace DBAdministration
+{
+class CopyExercise;
+class ExerciseTableGenerator;
+}
+namespace ExerciseManagement
+{
+  class DatabaseInterface;
+  class ExerciseStateMachine;
+  class HandlerExercise;
+
+  class ObjectExercise final : public QObject
+  {
+      Q_OBJECT
+    public:
+      explicit ObjectExercise(const std::shared_ptr<DdsHandler> &ddsHandler,
+                              const std::shared_ptr<DatabaseInterface> &db,
+                              const std::shared_ptr<DBAdministration::ExerciseTableGenerator> &exTblGen,
+                              HandlerExercise *exHandler);
+      ~ObjectExercise();
+
+      Core::FunctionReplyObject createObject(const Database::ExmExercise &data, bool forceInsert = false);
+      Core::FunctionReplyObject updateObject(const Database::ExmExercise &data);
+      Core::FunctionReplyObject removeObject(bool force);
+      bool setLinkedExerciseId(int newLinkedExerciseId);
+      bool setSendToWms(bool bSend);
+      void initStateMachine();
+
+      qint32 id() const { return m_data.id; }
+      ExerciseState exerciseState() const { return m_data.exerciseStateId; }
+      int linkedExerciseId() const { return m_data.linkedExerciseId; }
+      QString name() const { return m_data.name; }
+      bool sendToWms() const { return m_data.sendToWms; }
+      // for updating (when part of the data is changed)
+      const Database::ExmExercise &data() const { return m_data; }
+
+      // Used for Unittest (getting the signals)
+      ExerciseStateMachine* getStateMachine() { return m_stateMachine; }
+
+      // Used by ExerciseStateManager (only internal)
+      bool setExerciseState(const ExerciseState &exerciseState);
+
+      // Used by Client
+      Core::FunctionReplyObject switchToState(const ExerciseState &newExerciseState, int operatorId, int workstationId);
+
+      // TODO: implement
+      bool isEditable() const{ return true; }
+      bool isValid() const;
+      bool isRunning() const;
+      bool isStopped() const;
+
+      bool sendStateToServiceManagement(ExerciseState state);
+      bool transferExerciseToEvaluationDb();
+
+  private:
+      void onPublishData();
+      void fixupTimeZone();
+      void onErrorOccured();
+      void onTransferDbFinished();
+
+    private:
+      std::shared_ptr<DdsHandler>    m_ddsHandler;
+      std::shared_ptr<DatabaseInterface>      m_db;
+      const std::shared_ptr<DBAdministration::ExerciseTableGenerator> m_exTblGen;
+      Database::ExmExercise          m_data;
+      ExerciseStateMachine          *m_stateMachine;
+      HandlerExercise               *m_exerciseHandler;
+      DBAdministration::CopyExercise *m_copyExercise;
+      NGL::INGLLogger               &m_logger;
+
+  };
+}