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/Viewer/LtsFileDialog/lts_file_dialog.cpp

@@ -0,0 +1,131 @@
+/**
+  * @RDE_HEADER@
+  * LtsFileDialogWidget and LtsFileDialog - custom widgets
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  * Created by Iuliana Ojog, SLSE, 2017-07-11
+  */
+
+#include "lts_file_dialog.h"
+#include "ui_lts_file_dialog.h"
+
+#include "lts_file_dialog_widget.h"
+#include "lts_dialog_model_folder.h"
+#include "lts_dialog_model_file.h"
+#include <Services/FileManagement/flm_translation.h>
+
+#include <Viewer/LtsDataView/lts_data_view.h>
+
+namespace LtsWidgets
+{
+//-----------------------------------------------------------------------------------------------------------
+// LtsFileDialog
+//-----------------------------------------------------------------------------------------------------------
+LtsFileDialog::LtsFileDialog(QWidget *parent)
+  : LtsWidgets::LtsFramelessDialog(parent, LtsWidgets::Behaviour::Modal)
+  , m_editItemWidget(new LtsFileDialogWidget(this))
+  , m_buttonBox (new LtsWidgets::LtsDialogButtonBox(this))
+{
+  LtsWidgets::DialogButton btnSelectFile   = LtsWidgets::DialogButton::Load;
+
+  m_buttonBox->setText(btnSelectFile, tr("Select File"));
+  m_buttonBox->setToolTip(btnSelectFile, tr("Select file from library"));
+  m_buttonBox->setButtonEnabled(btnSelectFile, false);
+  m_buttonBox->setButtonVisible(btnSelectFile, true);
+
+  connect(m_buttonBox->getButton(LtsWidgets::DialogButton::Close), &QPushButton::clicked, this, &LtsFileDialog::close);
+
+  //hide ok and apply
+  m_buttonBox->getButton(LtsWidgets::DialogButton::Apply)->hide();
+  m_buttonBox->getButton(LtsWidgets::DialogButton::Ok)->hide();
+}
+
+//-----------------------------------------------------------------------------------------------------------
+LtsFileDialog::~LtsFileDialog()
+{
+  delete m_editItemWidget;
+}
+
+//-----------------------------------------------------------------------------------------------------------
+bool LtsFileDialog::init(LtsSession::LtsSession *session,
+                         const std::shared_ptr<FileManagement::Interface::Dtc> &dtc,
+                         const std::shared_ptr<OperatorManagement::Interface::Dtc> &opmDtc,
+                         const std::shared_ptr<ExerciseManagement::Interface::Dtc> &exmDtc,
+                         const FileDialogMode &dlgMode,
+                         const QVector<FileManagement::MainFolder> &mainFolders,
+                         const QVector<FileManagement::FileType> &fileTypes,
+                         const int &folderId,
+                         const QString &buttonName,
+                         const QString &xmlType)
+{
+  if (!m_editItemWidget->init(session, dtc, opmDtc, exmDtc, dlgMode, mainFolders, fileTypes, folderId, xmlType))
+    return false;
+
+  m_dialogMode = dlgMode;
+
+  QVBoxLayout *layout = new QVBoxLayout(this);
+  layout->addWidget(m_editItemWidget);
+  layout->addWidget(m_buttonBox);
+  this->setLayout(layout);
+
+  if (!buttonName.isEmpty())
+  {
+    m_buttonBox->setText(LtsWidgets::DialogButton::Load, buttonName);
+    m_buttonBox->setToolTip(LtsWidgets::DialogButton::Load, buttonName);
+  }
+
+  if (m_dialogMode == FileDialogMode::modeSaveFile)
+    m_buttonBox->connectButton(LtsWidgets::DialogButton::Load, m_editItemWidget, &LtsFileDialogWidget::onChooseFileName);
+  else if (m_dialogMode == FileDialogMode::modeOpenFile)
+    m_buttonBox->connectButton(LtsWidgets::DialogButton::Load, m_editItemWidget, &LtsFileDialogWidget::onSelectFile);
+
+  connect(m_editItemWidget, &LtsFileDialogWidget::enableButtons, this, &LtsFileDialog::enaDisa);
+  connect(m_editItemWidget, &LtsFileDialogWidget::accepted, this, &LtsFileDialog::accept);
+  connect(m_buttonBox->getButton(LtsWidgets::DialogButton::Close), &QPushButton::clicked, this, &LtsFileDialog::reject);
+
+  enaDisa();
+
+  return true;
+}
+
+//-----------------------------------------------------------------------------------------------------------
+int LtsFileDialog::getSelectedFileId() const
+{
+  return m_editItemWidget->m_selectedFileContent.id();
+}
+
+//-----------------------------------------------------------------------------------------------------------
+FileManagement::FileContent LtsFileDialog::getSelectedFile() const
+{
+  return m_editItemWidget->m_selectedFileContent;
+}
+
+//-----------------------------------------------------------------------------------------------------------
+int LtsFileDialog::getSelectedFolder() const
+{
+  return m_editItemWidget->m_selectedFolderId;
+}
+
+//-----------------------------------------------------------------------------------------------------------
+QString LtsFileDialog::getFileName() const
+{
+  return m_editItemWidget->m_fileName;
+}
+
+//-----------------------------------------------------------------------------------------------------------
+void LtsFileDialog::enaDisa()
+{
+  LtsWidgets::DialogButton btnSelectFile    = LtsWidgets::DialogButton::Load;
+  m_buttonBox->setButtonEnabled(btnSelectFile, false);
+
+  QModelIndex idxFile = m_editItemWidget->m_ui->widgetFiles->currentIndex();
+  if (m_dialogMode == FileDialogMode::modeOpenFile && idxFile.isValid())
+    m_buttonBox->setButtonEnabled(btnSelectFile, true);
+
+  if (m_dialogMode == FileDialogMode::modeSaveFile && !m_editItemWidget->m_fileName.isEmpty())
+    m_buttonBox->setButtonEnabled(btnSelectFile, true);
+}
+
+//-----------------------------------------------------------------------------------------------------------
+} // namespace LtsWidgets