Make face preview of OG photo either wide or zoom in on the face

[scepterus]

Describe the enhancement you'd like
Right now when you preview a face's original photo, sometimes the face can be on the edge of the photo, and the preview is square.
We would benefit from the preview either being wide if the photo is wide, or zooming in on the area where the face is in the photo.

Describe why this will benefit the LibrePhotos
This would make spoting specific faces in a crowd easier, and not have to manually find the original photo and zoom in and search the edges.

Additional context
could be solved in relation to this:
#611

[scepterus]

Can be marked as done.