Support for keyword-encrypting search engine

A new search engine named “OneSearch” has just launched (https://www.onesearch.com/) promising a slew of privacy oriented features (which may obviously appeal Brave users). Its default mode, called “Advanced Privacy”, among other things is encrypting the search keywords thus preventing an easy addition via query tag.

As a user I would like Brave to support this scenario so I can add OneSearch and similar search engines to my browser defaults.