Loco Spawn Locations in User-Editable JSON

[katycat5e]

Allow configuring spawn location list in car.json

[lassombra]

I have some ideas about this as another root configuration that can be added to the custom car prefab directly that would allow it to hook into the vanilla spawn system only requiring destination track names - could include a list of vanilla track spawners as options.

This would then add them to the spawner at setup time.

I was researching this last night as part of the aux tenders as I want to have those in Career - I've solved the spawn capability for existing vanilla spawners - just working on additional tracks.

I'm going to hopefully finish that version in aux tenders this week and could then migrate it towards this mod if that works.

[lassombra]

Ok, after further work with this there is a gotcha.

The vanilla spawner actively verifies that what it's spawning is a loco or a tender.

I can work around this with Harmony patches, but that is a bit kludgy. Alternatively, this could be limited to only those CCL vehicles that derive from one of the base locos or the base tender.

@katycat5e what would be your preference on that?