feat: update the list of airlines

[avee87]

Current list is missing come airlines - particularly, some of those that went out of business. See some examples in #158
I found this bigger list here which should include them all: https://en.wikipedia.org/wiki/List_of_airline_codes

[sonarqubecloud]

Quality Gate failed

Failed conditions
16.9% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud

[johanohly]

Thank you for opening this pull request! I think this is a good idea, but I ran a simple script to check if any ICAO codes are in the old list, but missing in the new, and found almost 500 out of the total 2000 missing from the new list.

This would be a pretty big breaking change, and I don't really know how we could justify it really. I also can't think of a way to migrate outdated codes to the new ones, as we don't know the mapping.

[avee87]

This is interesting... I wonder if the differences are actually meaningful - i.e., if those missing airlines actually carried any passengers. I wonder if we could merge these lists. Do you know where the current one came from originally?

[johanohly]

Yes, it is from FlightRadar24 (https://www.flightradar24.com/_json/airlines.php). One solution could be to just transfer all the missing airlines to the new one.

[avee87]

Looks like the proper solution will have to be more complicated. ICAO codes seem to be reused: for instance, AirBerlin had ICAO code BER but now it's used by Fly Air41. Unless we implement some system for properly tracking periods when each airline is/was active, there will be errors.

[conchyliculture]

the PR also adds airline objects with the ICAO code having a null value, which the AirTrail code isn't expecting (and crashes)