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.cpp

@@ -0,0 +1,122 @@
+/**
+  * @RDE_HEADER@
+  * Base for ExerciseState
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#include "exercise_state_base.h"
+#include "logger.h"
+
+#include <time.h>
+
+
+namespace ExerciseManagement
+{
+
+//----------------------------------------
+
+ExerciseStateBase::ExerciseStateBase(const QString &objectName, const ExerciseState &exerciseState, ObjectExercise *objExe)
+  : QState()
+  , m_exercise(objExe) 
+  , m_logger(getLogger(QLatin1String("State.") + objectName))
+  , m_exerciseState(exerciseState)
+{
+  setObjectName(QLatin1String("State.") + objectName);
+}
+
+void ExerciseStateBase::onEntry(QEvent *event)
+{
+  QState::onEntry(event);
+
+  DEBUG_LOG(m_logger) << "Ex " << exerciseId() << ": onEntry Base: write exerciseState: " << m_exerciseState;
+  // write exerciseState to db
+  m_exercise->setExerciseState(m_exerciseState);
+
+  m_exercise->sendStateToServiceManagement(m_exerciseState);
+}
+
+//----------------------------------------
+Unknown::Unknown(ObjectExercise *objExe)
+  : ExerciseStateBase(QLatin1String("Unknown"), ExerciseState::Unknown, objExe)
+{}
+
+/*
+//----------------------------------------
+Free::Free(ObjectExercise *objExe)
+  : ExerciseStateBase("Free", SYSTEM_FREI, objExe)
+{}
+*/
+
+//----------------------------------------
+Creation::Creation(ObjectExercise *objExe)
+  : ExerciseStateBase(QLatin1String("Creation"), ExerciseState::Created, objExe)
+{}
+
+void Creation::onEntry(QEvent *event)
+{
+
+  // TODO: still needed?
+  // fill durchgef_uebungen, before base because
+  // we need a filled durchgef_uebungen there
+
+  DEBUG_LOG(m_logger) << "Ex " << exerciseId() << ": onEntry Creation ";
+  ExerciseStateBase::onEntry(event);
+
+  // TODO
+  /*
+  // initialize shm
+  m_db->initializeSharedMemory();
+  // add first entry to aufz_zeiten (if not already there)
+  m_db->insertInitialRecordingTime();
+  */
+}
+
+//----------------------------------------
+Start::Start(ObjectExercise *objExe)
+  : ExerciseStateBase(QLatin1String("Start"), ExerciseState::Started, objExe)
+{}
+
+void Start::onEntry(QEvent *event)
+{
+  DEBUG_LOG(m_logger) << "Ex " << exerciseId() << ": onEntry Start: write exerciseState: started";
+  ExerciseStateBase::onEntry(event);
+
+  // TODO:
+  //m_db->updateRecordingTimes(true);
+}
+
+void Start::onExit(QEvent *event)
+{
+  ExerciseStateBase::onExit(event);
+
+  //TODO
+  //m_db->updateRecordingTimes(false);
+}
+
+
+//----------------------------------------
+Pause::Pause(ObjectExercise *objExe)
+  : ExerciseStateBase(QLatin1String("Pause"), ExerciseState::Paused, objExe)
+{}
+
+
+//-----------------------------------------------------------------------------------------------------
+Stop::Stop(ObjectExercise *objExe)
+  : ExerciseStateBase(QLatin1String("Stop"), ExerciseState::Stopped, objExe)
+{}
+
+void Stop::onEntry(QEvent *event)
+{
+  ExerciseStateBase::onEntry(event);
+
+  m_exercise->transferExerciseToEvaluationDb();
+}
+
+//-----------------------------------------------------------------------------------------------------
+Terminate::Terminate(ObjectExercise *objExe)
+  : ExerciseStateBase(QLatin1String("Resume"), ExerciseState::Terminated, objExe)
+{}
+
+} // namespace ExerciseManagement