Discoverability

As the article says, one way to have some global broker, would be through a UDS socket where bus1 fds could be passed back and forth to query the required handles.

Another approach that we played around with would be to have a service manager pass in a pre-initialized bus1 fd when it spawns a service, containing handles to all its dependencies. This would require something like dependencies being declared in a manifest installed with each service and have nodes created and handles distributed accordingly.