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/SqlBrowser/DataModel.h

@@ -0,0 +1,62 @@
+#pragma once
+
+#include <QAbstractTableModel>
+
+using Data = QVector<QVariant>;
+using DataList = QVector<Data>;
+using HeaderList = QVector<QPair<QString, QVariant::Type>>;
+
+class DataModel: public QAbstractTableModel
+{
+  Q_OBJECT
+
+public:
+  explicit DataModel(QObject* parent = nullptr);
+
+
+  //void fillModel(const HeaderList &headerList, const DataList &dataList);
+  void dataListReserve(const int size);
+  void addLine(const Data& data);
+  void addColumn(const QString& columnName, QVariant::Type type);
+  const HeaderList& getHeaderList() const;
+
+
+
+  void setTableName(const QString& tableName);
+  QString getTableName() const;
+  void setEditable(bool editable);
+
+  int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+  int columnCount(const QModelIndex &parent = QModelIndex()) const override;
+  QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+  QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
+  Qt::ItemFlags flags(const QModelIndex &index) const override;
+  bool setData(const QModelIndex &index, const QVariant &value, int role) override;
+
+
+  void deleteLines(const QList<QModelIndex> &affectedRowsList);
+
+private:
+  HeaderList m_headerList;
+  DataList m_dataList;
+
+  // Threading...
+  HeaderList m_newHeaderList;
+  DataList m_newDataList;
+
+
+  QString m_tableName;
+  Qt::ItemFlags m_flags;
+
+  QAtomicInt m_idle;
+
+  void resetFlags();
+
+
+public slots:
+  void slotSwapLists();
+  void slotSetData(const QModelIndex &index, const QVariant &value);
+
+signals:
+  void signalSetData(DataModel*, const QModelIndex &, const QVariant &);
+};