Display image dimensions and aspect ratio in the status bar

[j03l]

The status bar currently shows cursor position, selection size, and zoom level. It would be useful to also display the current image dimensions and simplified aspect ratio (e.g., 1920 × 1080 - 16:9), giving users an at-a-glance reference without needing to open Image > Resize.

This is related to #1284, if DPI/PPI support is added in the future, that could be shown here too.

I'd be interested in contributing this if there's support for it.

[ryan-de-boer]

+1
I'd like to see the image dimensions.

[obradeth]

boa tarde, gostaria também de ver as reguas laterais e proporção em pixels.

[cameronwhite]

Sure, that seems reasonable to add 👍

[j03l]

#2013