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/Buildings/relay_info_handler.cpp

@@ -10,6 +10,7 @@ RelayInfoHandler::RelayInfoHandler(MainHandler *mainHandler)
   : QObject()
   , Interface::Fts::SetRelayInfoRequestHandler(mainHandler->ddsHandler()->fts())
   , m_mainHandler(mainHandler)
+  , m_logger(getLogger("RelayInfoHandler"))
 {}
 
 RelayInfoHandler::~RelayInfoHandler()