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/Plugins/ProjectionWorkstation/Gui/pws_control_dialog.cpp

@@ -310,7 +310,7 @@ void ControlDialog::fillCombobox()
   m_asmDtc->assets([this](const AssetManagement::Asset & data)
   {
     if (m_ui->chbProjectionWSOnly->isChecked() &&
-        data.assetTypeId() != AssetManagement::AssetType_def::ProjectionWorkstation)
+        data.assetTypeId() != AssetManagement::AssetType::ProjectionWorkstation)
       return;
     if (m_ui->chbInThisLocationOnly->isChecked() &&
         data.locationId() != m_locationId)