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/OcSituationClient/handler_oc_data.cpp

@@ -328,7 +328,7 @@ void HandlerOcData::onOwnPosition(const TrainingAreaBaseOC::OwnPosition &data, D
 
   TrainingAreaBase::EquipmentPosition out;
   out.sampleTime = data.timeStamp;
-  out.position.position(Core::GeoPosition(data.position.lon, data.position.lat, 0));
+  out.position.position = Core::GeoPosition(data.position.lon, data.position.lat, 0);
   if (data.moutObjectId.is_set())
     out.position.moutObjectId.set(data.moutObjectId.get());
   if (data.moutRoomId.is_set())