(Request) Image information and statistics

[ChristianMayer]

A great enhancement would be to have a statistic window that shows a summary of the width and height of all images and counts how many of each dimension is in the data set.
And then the filter should be able to select images by dimension.

Reason:

Although I'm trying to make my images 1024x1024 during the process of generating them I sometimes end up with slightly different sizes like 1032x1032 and I want to be able to quickly find the images with odd dimensions. For this I'd use the requested filter feature.

And the statistics window would allow me to do a final check whether all images are fine before I send them to the training.