Support search download - 4chan and archived website

[wankio]

https://boards.4chan.org/search#/touhou

These sites have search filter but gallery-dl is not support it yet.

FoolFuuka
https://archive.nyafuu.org/toy/search/text/touhou/
https://thebarchive.com/b/search/text/touhou/

https://yuki.la/search.html?boards=all&enddate=2020-12-12&sort=descending&subject=touhou#page=1

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I think support [search filter] is like support the whole [board] download, maybe it's not supported now or in the future, just because it have so many threads and may took a century to download all. You can easily crawl all thread links and bunch download with gallery-dl instead.

[mikf]

Searches on foolfuuka boards are now possible with 56b460d