Allow Live Ship Traffic model matching with IMO and/or MMSI identification numbers

As the title says, it will allow better model/texture matching when using custom models for the live sea traffic in 2024.

Henrik mentions it in the latest version of Global AI Ship Traffic.

The data MSFS currently provides only contains 30 different ship types and sim.cfg structure does not contain a section for IMO or MMSI identification making it difficult to achieve a sufficiently good model matching. Sometimes a 100% match will occur, but often not. and typically you will see especially European ferries on the wrong routes with live traffic activated

The MMSI is already read by MSFS 2024 - the question is how we can match that id? Maybe (and that’s a big maybe) Asobo reuses the atc_flight_number or some undocumented identifier for this task.