Session 022: Migrate Lts/Tools (72 submodules) to Qt6

- Copied complete Lts/Tools directory from qt5-before to qt6-after
- Updated 32 CMakeLists.txt files (Qt5:: → Qt6::)
- Tools subdirectory already included in parent Lts/CMakeLists.txt
- All 72 tool submodules now present in qt6-migrated-legatus
- Includes: Adler, ArAssets, ConfigX, DBAdministration, DBUpdate,
  DdsView, InfrastructureManagement, and 67 more tools
- C++17 standard (RTI 7.7.0 compatibility maintained)
- Tests deferred until final validation phase

Migration progress:
✅ Lts/Application (68 files)
✅ Lts/DDS (verified Qt6-ready)
✅ Lts/Plugins (60 submodules, verified)
✅ Lts/Projects (5 submodules, verified)
✅ Lts/Proxies (13 submodules, verified)
✅ Lts/Services (47 submodules, verified)
✅ Lts/Tools (72 submodules, copied + CMake updated)
✅ Lts/Viewer (LtsFileDialog, LtsReportDisplay, SituationMap)
🟡 TetraIF (partial)
🟡 Z (partial: nglwidgets, QtSingleApplication, qsql_informix, WMS_Interface)

qt6-after/qt6-migrated-legatus/Lts/Tools/ProjectSettingsEditor/main_window.h

@@ -0,0 +1,71 @@
+/**
+  * @RDE_HEADER@
+  *
+  * MainWindow for settings editor
+  *
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#pragma once
+
+#include <nglwidgets/nglmainwindow.h>
+
+#include <QtCore/QMap>
+#include <QPair>
+#include <QTreeWidgetItem>
+#include <QtCore/QString>
+#include <QtCore/QVariant>
+
+namespace Ui
+{
+class MainWindow;
+}
+
+namespace SettingsEditor
+{
+// --------------------------------------------------------------------------------
+// |                                Class MainWindow                              |
+// --------------------------------------------------------------------------------
+class MainWindow : public NGLMainWindow
+{
+  Q_OBJECT
+
+public:
+  explicit MainWindow(QWidget *parent = nullptr);
+  ~MainWindow();
+
+private slots:
+  void oncurrentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous);
+  void onSaveSettings();
+  void onExportSettings();
+  void onLoadFromExport();
+  void onLoadPresetFromTemplate();
+
+private:
+  bool saveSettings(const QString &filename);
+  bool loadSettings(const QString &filename);
+  enum SettingType
+  {
+    String = 1,
+    StringList = 2,
+    Json = 3,
+    FunctionKeys = 4,
+    Boolean = 5,
+  };
+
+  void enableTextEdit(bool enabled = true);
+  void enableFunctionKeyEdit();
+  void enableBoolEdit();
+  void setVersionView();
+  static QString craftKey(const QString &group, const QString &key);
+  static QString typeToString(SettingType t);
+  static SettingType stringToType(const QString &s);
+
+  QMap<QString, QPair<SettingType, QVariant>> m_data;
+  QString m_settingsFileName;
+
+  Ui::MainWindow *m_ui;
+};
+}