Add feature row: raw photos handling

[rektide]

Hello. I often shoot raw photos. The online services I've been using will either automatically or let me step through convert my raw images into something usable.

I'd love to see raw handling added as a feature/row.

[meichthys]

This is a bit of a rabbit hole since there are so many different photo formats that could be supported. I do think that RAW stands apart from the others tho for photography purposes. I will consider it, but if someone wanted to submit a PR, I would be glad to merge it!