Feature Request: Support for embedding Reddit gallery links

Thanks for the app.

I like how Connect is fairly good at embedding previews, e.g. https://lemmit.online/post/2476390

However, Connect is currently unable to embed Lemmy posts of Reddit galleries.

For example: https://lemmit.online/post/1045136
Points to: https://www.reddit.com/gallery/172hfko
(Old Reddit): https://old.reddit.com/r/whatisthisthing/comments/172hfko/what_are_these_swans_i_found_at_a_flea_market/

Also looking forward to open-sourcing & F-Droid release!