Qt6 migration: Fix BUILD_RTI=OFF build errors in TrainingAreaBase

- training_area_telegrams.cpp: Fixed QJsonObject initializer syntax (Qt6 requires {{}} not ({}))
- training_area_telegrams.cpp: Fixed fromJson() methods to access m_* members directly
- training_area_telegrams.cpp: Fixed brace mismatches in multiple toJson() methods
- training_area_telegrams.h: Changed Header struct to public members for consistency
- tx_mixin.cpp: Fixed getEquipmentNumber() template for direct member access
- lts_coordinate.cpp: Added missing #include <iomanip>
- MIGRATION_STATUS.md: Added migration progress tracking document

C++17 constraint enforced due to RTI Connext DDS 7.7.0 incompatibility with C++20+

Build status: BUILD_RTI=OFF successful (0 errors, warnings only)

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

qt6-after/qt6-migrated-legatus/Lts/Plugins/DeveloperTools/Gui/dev_debug_flags_dialog.cpp

@@ -9,7 +9,7 @@
 #include <Viewer/LtsDataView/lts_data_view.h>
 #include <LtsSession/lts_session_data.h>
 
-#include <QDebug>
+#include <QtCore/QDebug>
 
 
 namespace DeveloperTools

qt6-after/qt6-migrated-legatus/Lts/Plugins/DeveloperTools/Gui/dev_dialog.cpp

@@ -17,15 +17,15 @@
 #include <LtsMultiMonitor/lts_dummy_widget.h>
 #include <LtsUtilsSettings/settings.h>
 
-#include <QTimer>
-#include <QFormLayout>
-#include <QGroupBox>
-#include <QColorDialog>
-#include <QClipboard>
-#include <QInputDialog>
+#include <QtCore/QTimer>
+#include <QtWidgets/QFormLayout>
+#include <QtWidgets/QGroupBox>
+#include <QtWidgets/QColorDialog>
+#include <QtGui/QClipboard>
+#include <QtWidgets/QInputDialog>
 
 
-#include <QDebug>
+#include <QtCore/QDebug>
 
 
 namespace DeveloperTools

qt6-after/qt6-migrated-legatus/Lts/Plugins/DeveloperTools/Gui/dev_dialog.h

@@ -3,11 +3,11 @@
 
 
 
-#include <QDialog>
-#include <QWidget>
-#include <QGroupBox>
-#include <QLabel>
-#include <QVBoxLayout>
+#include <QtWidgets/QDialog>
+#include <QtWidgets/QWidget>
+#include <QtWidgets/QGroupBox>
+#include <QtWidgets/QLabel>
+#include <QtWidgets/QVBoxLayout>
 
 #include <LtsSession/lts_session_manager.h>
 

qt6-after/qt6-migrated-legatus/Lts/Plugins/DeveloperTools/Gui/dev_ftcmock.cpp

@@ -3,11 +3,11 @@
 #include <LtsSession/lts_session.h>
 #include <LtsWidgets/lts_global_wait_dialog.h>
 
-#include <QTimer>
+#include <QtCore/QTimer>
 #include <QRandomGenerator>
-#include <QLabel>
+#include <QtWidgets/QLabel>
 #include <QEventLoop>
-#include <QDebug>
+#include <QtCore/QDebug>
 
 
 namespace DeveloperTools

qt6-after/qt6-migrated-legatus/Lts/Plugins/DeveloperTools/Gui/dev_ftcmock.h

@@ -2,7 +2,7 @@
 
 #include <ExerciseManagement/exm_ftc.h>
 
-#include <QObject>
+#include <QtCore/QObject>
 
 #include <memory>
 

qt6-after/qt6-migrated-legatus/Lts/Plugins/DeveloperTools/Gui/dev_gui_plugin.cpp

@@ -18,15 +18,15 @@
 #include <LtsWidgets/lts_base_layout_widget.h>
 #include <LtsWidgets/lts_notification_box.h>
 
-#include <QGuiApplication>
-#include <QInputDialog>
-#include <QMessageBox>
-#include <QTimer>
-#include <QTime>
-#include <QDebug>
-#include <QThread>
-#include <QShortcut>
-#include <QTcpSocket>
+#include <QtGui/QGuiApplication>
+#include <QtWidgets/QInputDialog>
+#include <QtWidgets/QMessageBox>
+#include <QtCore/QTimer>
+#include <QtCore/QTime>
+#include <QtCore/QDebug>
+#include <QtCore/QThread>
+#include <QtGui/QShortcut>
+#include <QtNetwork/QTcpSocket>
 
 
 namespace DeveloperTools

qt6-after/qt6-migrated-legatus/Lts/Plugins/DeveloperTools/Gui/dev_permissions_dialog.cpp

@@ -3,10 +3,10 @@
 
 #include <LtsSession/lts_session.h>
 
-#include <QHBoxLayout>
-#include <QPushButton>
-#include <QLabel>
-#include <QTimer>
+#include <QtWidgets/QHBoxLayout>
+#include <QtWidgets/QPushButton>
+#include <QtWidgets/QLabel>
+#include <QtCore/QTimer>
 
 
 namespace DeveloperTools