picodata status

Implement a CLI command picodata status, which prints all current members of the cluster and their status.

It shouild print:

Cluster ID: Cluster Name: name

Then something like a select * from system._peer but with the following fields:

| status | instance_name | instance_uuid | replicaset_uuid | tier | advertise_uri |

By default, connect to default --peer, or support --peer argument.

We should have enough details to be able to connect to physical host.

Sort by status, first show alive instances