man: link up D-Bus API docs from daemon man pages

man: link up D-Bus API docs from daemon man pages

Let's systematically make sure that we link up the D-Bus interfaces from
the daemon man pages once in prose and once in short form at the bottom
("See Also"), for all daemons.

Also, add reverse links at the bottom of the D-Bus API docs.

Fixes: #34996
(cherry picked from commit 607d2974870e9769f44ee179dcaf26cbec64cb20)