- adds endpoint POST /edge/management/v1/authenticator/{id}/extend
- adds endpoint POST /edge/management/v1/authenticator/{id}/extend-verify
- adds endpoint POST /edge/client/v1/authenticator/{id}/extend
- adds endpoint POST /edge/client/v1/authenticator/{id}/extend-verify
- add logic that allows a client endpoint to extend the valid period for
their current certificate authenticator
- requires clients to use their existing client cetificate for extension
- requires clients to verify they have received the new public key
- allows clients to use a new private key if desired
- allows only 1st party certificate authenticators to extend
- adds authenticatorId to apiSession for persistence, model, api model
- add session cert to already authenticated session on extend
- removes empty test stub
- as updates to API Sessions can now happen later than the last time
they were active, updatedAt is no longer the correct representation of
the last activity an API Session had
- move all logic that used updatedAt to lastActivityAt
- add migration to set lastActivityAt