Feature Request: Likes, Ratings, and Comments for Photos

[ArtemIvlev]

As a photographer, I use Pigallery2 to easily share photos with clients. It would be great if my clients could like or rate the photos and leave comments. This would help me better understand their preferences and simplify the process of selecting final images.

I suggest adding the following features:

Likes: Clients can like their favorite photos.
Ratings: Ability to rate photos (e.g., 1 to 5 stars).
Comments: Ability to leave text comments on photos for discussing details.
These features would enhance client interaction and make the photo gallery process more efficient.

[skatsubo]

It seems it will not get into the mainline PiGallery2, unfortunately (as Patrik is so busy these days and haven't made commits or approved PRs for 6 months).
Closest thing I've seen is #994