Lightbox Can I add a button for image rotation.
example:
Yes you can. I think a theme component should suffice.
Rotate is something that could be very useful for iPhones cause when you use native resize it drops exif so we can not figure out orientation.
I do not think this would belong in the lightbox, it would belong in the preview next to 50%,75%,100% buttons.
Yes, that would be great if it happened (% 50,% 75,%100).
can this be done in next updates
Not on our roadmap atm, but a theme component could possibly achieve this, I would recommend starting there.