Feature Request: Thumbnail preview for image files

[Crissov]

It would be nice if image files (SVG, JPEG, PNG, GIF) could get a thumbnail preview image instead of a file icon in the file list. If a folder contains (almost) only image files, a gallery preview with larger previews would also be helpful – but beware, I know repositories with image folders that literally hold thousands of files (e.g. Twemoji).