Consider adding debug indicators for EXIF rotation

[jacobtabak]

EXIF orientation seems to be a recurring pain point that's rather difficult to debug. It may be worth considering adding some sort of visual cue to the indicators for images that have been automatically rotated.

Maybe a small '⤾' in the colored corner or something.

[dnkoutso]

Thats a good idea. Perhaps even further Transformations can provide their own debug indicator...

[JakeWharton]

Let's change the indicators to a non-equilateral triangle so that it's obvious of the rotation assuming we can propagate the information upward.