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/TetraIF/LogView/LogViewTelegramSelectionDialog.cpp

@@ -0,0 +1,62 @@
+// **************************************************************************
+// 
+//  (C) Copyright 2009   Swiss SIMTEC AG
+// 
+// **************************************************************************
+// 
+//  $HeadURL$
+//  $LastChangedBy$
+//  $LastChangedDate$
+//  $LastChangedRevision$
+//   
+// **************************************************************************
+ 
+#include "LogViewTelegramSelectionDialog.hpp"
+#include <QLabel>
+#include <QListWidget>
+#include <QVBoxLayout>
+#include "LogViewXdrType.hpp"
+#include "LogViewXdrParser.hpp"
+#include "LogViewTelegram.hpp"
+#include "LogViewTetraTelegramsParser.hpp"
+
+namespace N_LogView
+{
+static int s_currentRow = 0;
+// ---------------------------------------------------------------
+LogViewTelegramSelectionDialog::LogViewTelegramSelectionDialog(QWidget* a_parent)
+  : QDialog(a_parent)
+{
+  setMinimumSize(QSize(600, 500));
+  QVBoxLayout* layout = new QVBoxLayout;
+  layout->addWidget(new QLabel(tr("Select a telegram:")));
+  m_TelegramList = new QListWidget(this);
+  const auto telegramMap = LogViewTelegram::jsonParser()->telegramsToCreate();
+  for (auto it = telegramMap.cbegin(); it != telegramMap.cend(); ++it)
+  {
+    if (it.key() == 0)  // ACK
+      continue;
+    auto lwi = new QListWidgetItem(it.value() + QStringLiteral(" (%1)").arg(it.key()));
+    lwi->setData(Qt::UserRole, it.key());
+    m_TelegramList->addItem(lwi);
+  }
+
+  m_TelegramList->sortItems();
+  m_TelegramList->setCurrentRow(s_currentRow);
+  connect(m_TelegramList, &QListWidget::itemActivated,
+          this, &LogViewTelegramSelectionDialog::selectTelegram);
+  layout->addWidget(m_TelegramList);
+
+  setLayout(layout);
+}
+
+
+// ---------------------------------------------------------------
+void LogViewTelegramSelectionDialog::selectTelegram(QListWidgetItem* a_telegramItem)
+{
+  s_currentRow = m_TelegramList->currentRow();
+  m_SelectedTelegramId = a_telegramItem->data(Qt::UserRole).toInt();
+  accept();
+}
+
+} // namespace N_LogView