Feature request: Add "includes image" to the Advanced search options

[erlend_sh (Erlend Sogge Heggen)]

@dmacjam

Is it both for uploaded images and images pasted as links?

Both.

@dmacjam

Is there a specific use case for images? I think it might be more general to filter posts with any allowed type of attachment uploaded (e.g. pdf, csv).

I think that should be its own filter. People frequently post images from other image sharing resources like imgur.