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/Proxies/WarehouseManagement/main_handler.cpp

@@ -48,7 +48,7 @@ bool MainHandler::init(int domainId)
   connect(m_exercisesHandler.get(), &ExercisesHandler::registrationReturnValue, m_dataManager,
           &DataManager::onRegistrationReturnValue);
 
-  m_ddsHandler->pacemaker()->setNewState(Core::RunningState::inner_enum::Running);
+  m_ddsHandler->pacemaker()->setNewState(Core::RunningState::Running);
 
   return true;
 }