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.cpp

@@ -0,0 +1,46 @@
+/**
+  * @RDE_HEADER@
+  * Settings Editor -> creating and editing existing default settings
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#include "main_window.h"
+
+#include <LtsCommandLineParser/LtsCommandLineParser.h>
+#include <NGLLogger/INGLLogger.h>
+#include <nglapplication/nglapplication.h>
+#include <LtsPluginManager/lts_plugin_loader.h>
+#include <PluginInterfaces/style_plugin_interface.h>
+
+int main(int argc, char *argv[])
+{
+  NGLApplication app(argc, argv);
+  app.createLogger("SettingsEditor", "log4cxx_settingsEditor.props");
+  NGL::INGLLogger &logger = app.baseLogger();
+  QCoreApplication::setApplicationName(QLatin1String("Settings Editor"));
+  QCoreApplication::setOrganizationName(QLatin1String("RME"));
+
+  LtsPluginManager::LtsPluginLoader::getInstance()->loadPlugins(LtsPluginManager::PluginType::STYLE,
+                                                                nullptr,
+  {QStringLiteral("rde.light")}); // load style plugin
+
+  int retval = 0;
+  STARTUP_LOG(logger);
+  {
+    QScopedPointer<SettingsEditor::MainWindow> mw(new SettingsEditor::MainWindow);
+
+    mw->setWindowTitle(QLatin1String("ProjectSettingsEditor"));
+
+    mw->show();
+
+    app.setQuitOnLastWindowClosed(true);
+
+    retval = app.exec();
+
+    SHUTDOWN_LOG(logger);
+  }
+
+  return retval;
+}