Add support for : fastpic.org

[vitaly-zdanevich]

See Скриншоты block at https://rutracker.me/forum/viewtopic.php?t=6419292 (The Dark Mod game is free and open source - this link is not piracy)

Why we should add support for the website?
This is a popular website for storing of images.

[Kissaki]

I looked whether I could implement this and here's what I found out:

Looking for a public image to test with, I found

gallery          https://new.fastpic.org/album/VuXsn3TLl5
image page       https://fastpic.org/view/121/2023/0329/fc13eee9c5ae885d55178b6107c163c2.jpg.html
full image page  https://fastpic.org/fullview/121/2023/0329/fc13eee9c5ae885d55178b6107c163c2.jpg.html
thumbnail:       https://i121.fastpic.org/thumb/2023/0329/c2/fc13eee9c5ae885d55178b6107c163c2.jpeg
fullsize:        https://i121.fastpic.org/big/2023/0329/c2/fc13eee9c5ae885d55178b6107c163c2.jpg?md5=9jPtxV2kuUGzJjxxufq3Pw&expires=1734184800

The md5 and expires URL parameters are necessary to receive/request the image directly. The expiry indicates the link/values is/are only valid for one day.

The page script is non-trivial. Somewhere in there it must be requesting and generating the appropriate image URL.