Have you searched for similar requests?
Yes

Is your feature request related to a problem? Please describe.
While using SillyTavern I'm creating a lot of characters, locations, etc. that I'm keeping track of in the lorebook. I'm also using Stable Diffusion to create matching pictures. It would be great if these pictures could be attached to the lorebook.

Describe the solution you'd like
It should be possible to attach one picture per world editor entry. You can do this by clicking on a button that allows you to upload a picture from your computer.

Describe alternatives you've considered

Additional context
The new Kobold AI UI has this feature, something similar might work in SillyTavern as well.