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/dds_handler.cpp

@@ -45,7 +45,7 @@ bool DdsHandler::init(const QStringList &qosFileList)
   m_ppmFtc = ParticipantManagement::Interface::Ftc::create(m_ddsConnector);
   bRet &= m_ppmFtc->enableModifyEquipmentTypeData();
 
-  m_pacemaker->setNewState(Core::RunningState::inner_enum::Starting);
+  m_pacemaker->setNewState(Core::RunningState::Starting);
 
   return bRet;
 }