This appends an icon element to each search result, using the result
domain's "/favicon.ico" path.
Note that some sites do not have a standard /favicon.ico, but have a
unique path to a specifically sized favicon instead. Worse still, some
sites use javascript to load their favicon, which would make it even
more difficult for Whoogle to figure out.
For now this approach is fine, but can be expanded upon in the future
if desired.
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