Add sjl-static domains for thumbnails

[actuallyasmartname]

In 2006-2007, YouTube used sjl-static{number}.sjl.youtube.com to host thumbnails. https://web.archive.org/cdx/search/cdx?url=sjl-static1.sjl.youtube.com/*&output=json&fl=original&collapse=urlkey Only issue is that the number in question goes from 1 - 16, meaning there needs to be 16 domains checked and that's pretty unrealistic for every query.