COSE Liaison Outcome

Record whether COSE review was completed and whether any COSE/CWT registrations(headers/claims) are needed.  [[datatracker.ietf.org]<https://datatracker.ietf.org/meeting/120/materials/slides-120-rats-epoch-markers-01>](http://datatracker.ietf.org]%3Chttps://datatracker.ietf.org/meeting/120/materials/slides-120-rats-epoch-markers-01%3E)