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/exercise_state_base.h

@@ -0,0 +1,91 @@
+/**
+  * @RDE_HEADER@
+  * Base for ExerciseState
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#pragma once
+
+#include <QState>
+
+#include <ExerciseManagement/exm_enums.hpp>
+
+#include "object_exercise.h"
+
+namespace ExerciseManagement
+{
+
+  class ExerciseStateBase : public QState
+  {
+    Q_OBJECT
+  public:
+    ExerciseManagement::ExerciseState exerciseState() const { return m_exerciseState; }
+
+  protected:
+    ExerciseStateBase(const QString &objectName, const ExerciseState &exerciseState, ObjectExercise* objExe);
+    void onEntry(QEvent *event);
+
+    int exerciseId() const { return m_exercise ? m_exercise->id() : -1; }
+
+  protected:
+    ObjectExercise  *m_exercise;    
+    NGL::INGLLogger &m_logger;
+
+  private:
+    const ExerciseManagement::ExerciseState m_exerciseState;
+  };
+
+  class Unknown : public ExerciseStateBase
+  {
+      Q_OBJECT
+    public:
+      explicit Unknown(ObjectExercise *objExe);
+  };
+
+  class Creation : public ExerciseStateBase
+  {
+      Q_OBJECT
+    public:
+      explicit Creation(ObjectExercise *objExe);
+    protected:
+      void onEntry(QEvent *event);
+  };
+
+  class Start : public ExerciseStateBase
+  {
+      Q_OBJECT
+    public:
+      explicit Start(ObjectExercise *objExe);
+    protected:
+      void onEntry(QEvent *event);
+      void onExit(QEvent *event);
+  };
+
+  class Pause : public ExerciseStateBase
+  {
+      Q_OBJECT
+    public:
+      explicit Pause(ObjectExercise *objExe);    
+  };
+
+  class Stop : public ExerciseStateBase
+  {
+      Q_OBJECT
+    public:
+      explicit Stop(ObjectExercise *objExe);
+    protected:
+      void onEntry(QEvent *event);
+  };
+
+  class Terminate : public ExerciseStateBase
+  {
+      Q_OBJECT
+    public:
+      explicit Terminate(ObjectExercise *objExe);
+  };
+
+
+} // namespace ExerciseManagement
+