This change adds a new utility function for postgres
`server_hypertable_info`. This function will contact a provided node
and pull down the space information for all the distributed hypertables
on that node.
Additionally, a new view `distributed_server_info` has been added to
timescaledb_information. This view leverages the new
remote_hypertable_data function to display a list of nodes, along with
counts of tables, chunks, and total bytes used by distributed data.
Finally, this change also adds a `hypertable_server_relation_size`
function, which, given the name of a distributed hypertable, will print
the space information for that hypertable on each node of the
distributed database.
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