Add support for MrDeepFakes

[bacchus-enorches]

A couple hot takes in here since it doesn’t seem like there’s any prior art regarding deepfakes. In general, I’ve opted for over‐scraping so curators can just ignore what they don’t want.

• Both the faked celebrity faces and original pornstars are scraped as performers without distinction.
  If it’s acceptable to add a deepfake tag to the deepfaked performers, that would be an easy workaround, but there’s definitely potential for false positives with that approach.
• Verified uploaders, which I’m interpreting as the closest thing to content creators here, are scraped as studios.

If there’s an XPath way to do gallery search by name, that should be easy to add as it’s analogous to scene search.

Also, I can’t tell whether or not using a subscraper to grab a whole performer by URL from a scene/gallery, rather than just string values, is possible with XPath. But if it is, it should be dead simple since all the information is there.