add-id-certifier (c+) KEYID import and tsign a certification key
--domain (-n) DOMAIN limit ID certifications to DOMAIN
--trust (-t) TRUST trust level of certifier (full)
add-id-certifier (c+) KEYID import and tsign a certification key
--domain (-n) DOMAIN limit ID certifications to DOMAIN
--trust (-t) TRUST trust level of certifier (full)