Support PhotoSwipe v5

[irudoy]

Preparing to forthcoming PhotoSwipe v5 release dimsemenov/PhotoSwipe#1749.
It was fully rewritten and some initialization-relative concepts have changed.

• react-photoswipe-gallery v2.x should get rid of CustomGallery and support only PhotoSwipe >=v5
• react-photoswipe-gallery v1.x will support PhotoSwipe <=v4

What should be done:

• add new props for Item component (cropped, srcset, etc.)
• decide what to do with removed features like HistoryAPI/captions
• implement PhotoSwipeLightbox functionality (pointerPos, global check, destroy on unmount)

[Perni1984]

@irudoy we are planning to use PhotoSwipe v5 in our next.js based website. Is the v5 branch already usable, or can we contribute here to get it useable?

[irudoy]

@Perni1984 I would not recommend using v5 in production while dimsemenov/PhotoSwipe v5 is in the beta stage. dromru/react-photoswipe-gallery/tree/photoswipe-v5 is definitely not ready yet, even though it works in general. Anyway, you can give it a try with yarn add photoswipe@dimsemenov/photoswipe#v5-beta react-photoswipe-gallery@next, if you like adventures :) But API definitely will change slightly.