Bugzilla OpenSearch Engine wót aminomancer

A Bugzilla search engine with a better icon with context properties so it can be made to look good with both light and dark themes.

Search provider details:
name: Bugzilla,
search_url: https://bugzilla.mozilla.org/buglist.cgi,
search_form: https://bugzilla.mozilla.org/buglist.cgi?quicksearch={searchTerms},
search_url_get_params: quicksearch={searchTerms}