Download Preset Support

Ref:
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http://zenbooru.org/compat.html
https://web.archive.org/web/20170329234048/http://www.mignori.com/servers/

NEW Ref, "Unimported"
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https://github.com/AtlasTheBot/booru

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- [x] https://yiff.party/
- [x] https://www.artstation.com/
- [x] https://inkbunny.net/
- [ ] https://nozomi.la/
- [ ] https://hitomi.la/
- [ ] http://mspabooru.com/
- [ ] http://ichijou.org/
- [ ] http://yukkuri.shii.org/
- [ ] http://dollbooru.org/
- [ ] http://www.giantessbooru.com/
- [ ] http://www.megabooru.com/
- [ ] http://wildcritters.ws/
- [ ] http://www.kawaiihentai.com/
- [x] https://derpibooru.org/
- [x] http://atfbooru.ninja
- [x] http://e926.net/
- [x] https://lolibooru.moe/
- [x] https://twentypercentcooler.net/
- [x] https://konachan.com/
- [x] https://konachan.net/
- [x] http://hypnohub.net/
- [ ] http://instantfap.com
- [x] http://neko-booru.com
- [ ] https://fuskator.com
- [ ] soup.io

Start by comparing the repository's existing Hydrus preset collection with the compatibility references and the unchecked sites listed in the issue. The issue names no files, tests, or implementation entry point, so the scope and completion criteria need clarification; done would require adding agreed download presets for selected sites and verifying them.

Written by the indexing model from the issue text.