Migrates residual Lts sources to generated rtiddsgen API

Adds NmeaManagement tests, fixes codegen includes and Qt6 SerialPort CMake target.

qt6-after/qt6-migrated-legatus/Lts/Services/ProjectDataManagement/pdm_to_string.h

@@ -6,9 +6,9 @@
 * $Author$
 */
 
-#include <pdm_export.h>
-#include <pdm_enums.hpp>
-#include <pdm_translation.h>
+#include "pdm_export.h"
+#include <ProjectDataManagement/pdm_enums.hpp>
+#include <ProjectDataManagement/pdm_translation.h>
 #include <QtCore/QCoreApplication>
 
 namespace ProjectDataManagement