Release Onionoo 6.2-1.16.0

As briefly discussed at today's team meeting, let's put out a new Onionoo release. But let's first come up with a list of changes going in now.

Tickets affecting only the implementation that we still need to merge:

[[TicketQuery(id=26963|26919|26969)]]

(Note: #26919 (moved) is only listed for the logging patch, not for the actual change.)

Tickets requiring a minor protocol version bump from 6.1 to 6.2:

[[TicketQuery(id=23713|25448)]]

Tickets requiring a major protocol version bump to 7.0 which we're only announcing now and merging/deploying in a month from now:

[[TicketQuery(id=6947|26919|25177|25175)]]

Are these lists complete? And are we really going to make all those changes listed under 7.0? At least #25175 (moved) didn't see much discussion.

Later today, I'll start with merging remaining patches and afterwards writing the metrics-web patch.