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/Tools/DdsView/samplemodel.h

@@ -0,0 +1,114 @@
+/**
+  * @RDE_HEADER@
+  *
+  * TableModel for dynamic topics
+  *
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#pragma once
+
+#include <QAbstractItemModel>
+#include <QSortFilterProxyModel>
+#include <QVector>
+#include <QSharedPointer>
+#include <QDomDocument>
+
+#include <dds/dds.hpp>
+
+#include "logger.h"
+
+class SampleSortModel;
+class DetailViewDlg;
+
+class SampleModel final : public QAbstractTableModel
+{
+  Q_OBJECT
+public:
+  explicit SampleModel(QObject *parent = nullptr);
+  ~SampleModel();
+
+  enum Column
+  {
+    TypeName    = 0,
+    TopicName   = 1,
+    Description = 2,
+    Pause       = 3,
+    Maximum     = Pause
+  };
+
+  struct SampleData
+  {
+    std::string            typeName;
+    QString                topicName;
+    QString                description;
+    int                    pause         = 1000;
+    QSharedPointer<dds::core::xtypes::DynamicData> legatusData;
+    DetailViewDlg         *dialog        = nullptr;
+    void toXml(QDomDocument &doc, QDomElement &elem) const;
+    bool fromXml(QDomElement &elem);
+
+    QByteArray encodeForMime() const;
+    static SampleData decodeFromMime(const QByteArray &encodedData);
+  };
+
+  int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+  int columnCount(const QModelIndex &parent = QModelIndex()) const override;
+
+  bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::DisplayRole) override;
+  QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+
+  QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
+  Qt::ItemFlags flags(const QModelIndex &index) const override;
+
+  std::string typeName(const QModelIndex &index) const;
+  const QSharedPointer<dds::core::xtypes::DynamicData> dynamicData(const QModelIndex &index) const;
+  QString name(const QModelIndex &index) const;
+
+  Qt::DropActions supportedDropActions() const override;
+  Qt::DropActions supportedDragActions() const override;
+
+  QMimeData *mimeData(const QModelIndexList &indexes) const override;
+  bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) override;
+  QStringList mimeTypes() const override;
+
+  bool addRow(const dds::core::xtypes::DynamicData &data, const QString &topicName, const QString &description = QString());
+  bool deleteRow(const QModelIndex &index);
+  bool updateRow(const QModelIndex &index, const QSharedPointer<dds::core::xtypes::DynamicData> &data, const QString &topicName);
+  bool addRow(const SampleData &sample, int position = -1);
+
+  SampleData sampleData(const QModelIndex &index) const;
+  void setDialog(const QModelIndex &index, DetailViewDlg *dlg);
+  QModelIndex indexByDialog(const DetailViewDlg *dlg) const;
+
+public slots:
+  void onClear();
+
+private:
+
+  QVector<SampleData>    m_data;
+  NGL::INGLLogger       &m_logger;
+
+  friend class SampleSortModel;
+};
+
+class SampleSortModel final : public QSortFilterProxyModel
+{
+  Q_OBJECT
+public:
+  using QSortFilterProxyModel::QSortFilterProxyModel;
+
+  void setCurrentRow(int row) { m_currentRow = row; emit headerDataChanged(Qt::Vertical, row, row);}
+  int  currentRow() { return m_currentRow >= rowCount() ? -1 : m_currentRow; }
+
+  QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
+  void sort(int column, Qt::SortOrder order) override;
+protected:
+  bool lessThan(const QModelIndex &left,
+                const QModelIndex &right) const override;
+private:
+  int m_currentRow = -1;
+
+};