added Authentication-Results header, with provider

dkim, dmarc, fcrdns (iprev), spf, and smtp-auth
tested and working Authentication-Results

changed the method of saving results. Instead of appending to/from a header, plugins save results to a connection note.

Qpsmtpd::SMTP.pm has a new method that inserts the Authentication-Results header
The smtp-auth information has been removed from the Received header

Authentication-Results providing plugins have been updated to store results in connection note
define positioning of Authentication-Results header