Image scraper for Pillowfort

[TheSmilingPony]

Add scraper support for Pillowfort (https://www.pillowfort.social/)

As a minimum:

• Using a Pillowfort post URL in the image source and pressing Fetch should grab the primary / first in the post at full res
• Should add the post URL in the source field
• Should add the poster's name as an artist:x tag

Ideally:

• If there are multiple images in the post, should display them and allow the uploader to select which to upload
• If there's a description in the post, should copy its text to the upload's Description field

[BradKML]

Are you sure that Gallery-DL hasn't covered this already?

[liamwhite]

That is not the purpose; the purpose is to allow rapidly bringing images into the site via the upload form.