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/ExerciseManagement/handler_exercise_phase.cpp

@@ -7,8 +7,8 @@
 
 #include "handler_exercise_phase.h"
 
-#include <QtCore/QDateTime>
-#include <QtCore/QString>
+#include <QDateTime>
+#include <QString>
 
 #include "dds_handler.h"
 #include "exm_db.h"
@@ -29,6 +29,7 @@ HandlerExercisePhase::HandlerExercisePhase(MainHandler *mainHandler,
   , m_mainHandler(mainHandler)
   , m_ddsHandler(ddsHandler)
   , m_db(db)
+  , m_logger(getLogger("HandlerExercisePhase"))
 {}
 
 HandlerExercisePhase::~HandlerExercisePhase()