Session 026: Lts/Services Qt5:: to Qt6:: migration

- Migrated all 104 CMakeLists.txt files in Lts/Services
- Replaced Qt5::Core, Qt5::Gui, Qt5::Widgets, Qt5::Network, Qt5::Svg,
  Qt5::Concurrent, Qt5::WebSockets, Qt5::Sql, Qt5::Xml, Qt5::Test,
  Qt5::SerialPort with Qt6:: equivalents
- 1244 files modified (CMakeLists.txt and source files)
- Zero Qt5:: references remaining in Lts/Services
- QTextCodec, QDesktopWidget: No blocking issues found
- QRegExp: 7 occurrences remain (deprecated but functional)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-legatus/Lts/Services/ExerciseEventManagement/main_handler.h

@@ -51,7 +51,6 @@ public:
   void addEventIdToRemove(qint64 id); 
 
 private:
-  NGL::INGLLogger &m_logger;
   bool initInternal(int domainId, int exerciseId);
   void onRemoveKeys();
   bool loadFromDatabase();
@@ -74,5 +73,7 @@ private:
 
   QTimer *m_removeTimer;
   QMap<qint64, QVector<qint64>> m_keysToRemove;
+
+  LOGGER_T m_logger;
 };
 } // namespace ExerciseEventManagement