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/Plugins/DeveloperTools/Gui/dev_ftcmock.cpp

@@ -0,0 +1,148 @@
+#include "dev_ftcmock.h"
+
+#include <LtsSession/lts_session.h>
+#include <LtsWidgets/lts_global_wait_dialog.h>
+
+#include <QTimer>
+#include <QRandomGenerator>
+#include <QLabel>
+#include <QEventLoop>
+#include <QDebug>
+
+
+namespace DeveloperTools
+{
+FtcMock::FtcMock(LtsSession::LtsSession *session, int min, int max, int timers)
+  : m_session(session)
+  , m_exmFtc(ExerciseManagement::Interface::Ftc::create(m_session->ddsConnector()))
+  , m_gen(QRandomGenerator::global())
+  , m_min(min)
+  , m_max(max)
+{
+  for (int i = 0; i <= timers; i++)
+  {
+    auto *t = new QTimer(this);
+    t->setSingleShot(true);
+    t->setInterval(m_gen->bounded(min, max));
+    QObject::connect(t, &QTimer::timeout, this, &FtcMock::mock, Qt::QueuedConnection);
+    t->start();
+  }
+}
+
+
+void FtcMock::mock()
+{
+  QPointer<QTimer> t(static_cast<QTimer *>(sender()));
+
+  uint32_t bit = 32;
+#define CHANCE(x) (((flags >> (bit-=x)) & x) == x)
+  const uint32_t flags = m_gen->generate();
+  auto exmFtc = m_exmFtc;
+
+  auto go = [this, flags, &bit, &exmFtc]()
+  {
+    bool useOwnFtc = CHANCE(0b111);
+
+    if (useOwnFtc)
+    {
+      fprintf(stderr, "ftcmock: use own, new ftc\n");
+      exmFtc = ExerciseManagement::Interface::Ftc::create(m_session->ddsConnector(), true /*don't reuse*/);
+    }
+
+    exmFtc->enableGetExerciseImage();
+    auto req = ExerciseManagement::GetExerciseImageRequest();
+    req.exerciseId(42);
+    ExerciseManagement::GetExerciseImageReply rep;
+    try
+    {
+      //Waiter _;
+      rep = exmFtc->getExerciseImageRequest(req);
+    }
+    catch(const std::runtime_error &ex)
+    {
+      qWarning() << "!!!!!!!!!!!!!!!!! getExerciseImageRequest error: " << ex.what();
+      //Q_ASSERT(false);
+      return;
+    }
+
+
+    if (useOwnFtc && CHANCE(0b11))
+    {
+      // wait for thread to time out & die
+      auto *l = new QLabel;
+      QEventLoop x;
+      QObject::connect(l, &QLabel::linkActivated, &x, &QEventLoop::quit);
+      QTimer::singleShot(13000, l, [l](){ emit l->linkActivated({}); });
+      fprintf(stderr, "ftcmock: WAITING FOR THREAD TO TIME OUT & DIE....\n");
+      x.exec();
+      fprintf(stderr, "ftcmock: DONE!\n");
+      l->deleteLater();
+
+
+      // ... then get again to start the thread again
+      ExerciseManagement::GetExerciseImageReply rep;
+      try
+      {
+        //Waiter _;
+        rep = exmFtc->getExerciseImageRequest(req);
+      }
+      catch(const std::runtime_error &ex)
+      {
+        qWarning() << "!!!!!!!!!!!!!!!!! getExerciseImageRequest #2 error: " << ex.what();
+        //Q_ASSERT(false);
+        return;
+      }
+    }
+
+
+    exmFtc->enableExerciseImageModify();
+    auto req2 = ExerciseManagement::ExerciseImageModifyRequest(42, rep.imageData());
+    try
+    {
+      //Waiter _;
+      auto id = exmFtc->exerciseImageModifyRequest(req2);
+      if (id < 1)
+      {
+        qWarning() << "id < 1";
+        Q_ASSERT(false);
+        return;
+      }
+    }
+    catch(const std::runtime_error &ex)
+    {
+      qWarning() << "!!!!!!!!!!!!!!!!! exerciseImageModifyRequest error: " << ex.what();
+      //Q_ASSERT(false);
+      return;
+    }
+  };
+
+  go();
+
+  if (CHANCE(0b11))
+  {
+    fprintf(stderr, "ftcmock: again #1\n");
+    go(); // again
+  }
+
+  if (CHANCE(0b11))
+  {
+    fprintf(stderr, "ftcmock: again #2\n");
+    go(); // again
+  }
+
+
+  if (!t)
+    return;
+
+  t->setInterval(m_gen->bounded(m_min, m_max));
+  fprintf(stderr, "ftcmock: in %d ms\n", t->interval());
+  t->start();
+}
+
+
+FtcMock::~FtcMock()
+{
+
+}
+
+} // namespace DeveloperTools