Expose KingfisherOptionsInfoItem extension

[ManueGE]

Thanks for this project.

I see there are some helper methods for KingfisherOptionsInfoItem in one extension:

extension Collection where Iterator.Element == KingfisherOptionsInfoItem

It provides a lot of useful var to get info from an Array of KingfisherOptionsInfoItem, for instance get the scaleFactor or the transition.

These methods are really helpful when building custom processors, so exposing this extension would be awesome.

[onevcat]

Not a bad idea. Would you mind to send a p-r for this?

[ManueGE]

Sure! I'll do it soon