Add support to search via api.sauteed-onions.org
Support search for domain names with onion addresses via api.sauteed-onions.org. For example, one option would be to trigger a search for "www.example.com" when typing "www.example.com.sauteed.onion".
A major benefit of having native search in a webext is that it is possible to verify the returned answers automatically.
- Is there a CA-signed certificate for the claimed onion association?
- Is that CA-signed certificate CT-logged?
(A good first step is likely to just consume the sauteed onion API, then work on adding verification separately.)