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/ExerciseManagement/UnitTests/data_topic_tests.h

@@ -18,6 +18,9 @@
 
 #include <ExerciseManagement/exm.hpp>
 #include <rti/core/ListenerBinder.hpp>
+#include <dds/domain/DomainParticipant.hpp>
+#include <dds/pub/Publisher.hpp>
+#include <dds/sub/Subscriber.hpp>
 
 
 namespace NGL {