[Inactive users] SMTP and IMAP Authenticator override

[Arsnael]

After implementing the redis part to write user's login activity, we need to be able to actually store the data.

The goal here would be to implement a new Authenticator on Tmail, like TMailUserRepositoryAuthenticator that would:

• inject the used Authenticator
• inject the redis part

We could then just call the method of the underlying Authenticator, and if auth is successful, we store the user login info in redis.

We can get the info from the MDC / context :

org.slf4j.MDC.get("ip")
clock.instant()
org.slf4j.MDC.get("protocol")
org.slf4j.MDC.get("user-agent")

We might need to do a little addition on James side beforehand though to propagate the MDC context upon login.

DoD: Integration tests.