Suggestion: Expand on logic for media clean-up tool

[Zkyo63]

With the clean up utility, the ability to remove images based on whether other media types exist would be helpful to save some storage space. I tried to keep my images folder fairly barebone, but there’s still a ton of unnecessary images. The size is about 30 GB, despite me only using 1-3 pictures per game (I have a huge library). Only about half of them are even used. My BigBox theme only has two spots for media, with some images as a fallback. I never see the unused images, so there’s no point in keeping them around. I don’t have the time or patience to sort them manually, though.

If the cleanup tool had the ability, I’d remove the following:

-If a game video exists, delete gameplay snapshot for that game only
-If a 3D Box exists, delete 2D Box Front
-If a Steam Banner exists, delete 3D Box and 2D Box Front