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/CombatNetRadio/helper.cpp

@@ -13,12 +13,12 @@ namespace CombatNetRadio
 
 int stationId(const InfrastructureManagement::MainStructureElement &radioStation)
 {
-  return LtsUtils::JsonObject::fromJson(radioStation.properties()).valueOr<int>("stationId", 0);
+  return LtsUtils::JsonObject::fromJson(radioStation.properties).valueOr<int>("stationId", 0);
 }
 
 QString toRcIdString(const AudioVideoManagement::CnrChannel &cnrChannel)
 {
-  QString result = QString::fromStdString(cnrChannel.name());
+  QString result = QString::fromStdString(cnrChannel.name);
   result.remove(1, 2);
   return result;
 }