[Request] Check train station availability by name

[figsoda]

LuaSurface.train_station_available(station_name :: string) -> boolean

Returns true if there is at least one enabled train stop on this surface with the given station name.

[PyroFire]

LuaSurface.train_station_available(station_name :: string) -> boolean

Train stations are grouped by name, not by surface.
And apparently trains currently make no distinctions for rails or stations on other surfaces, so putting this on LuaSurface doesn't make much sense (i see where you're going with it though).

Returns true if there is at least one enabled train stop on this surface with the given station name.

What's wrong with doing this search manually yourself?
Factorio lua in its current shape is quite capable of doing this no problem without any changes needed.