feat: estimate Cloud2 cardinality on 1.X databases To ease migrations to Cloud 2 installations from 1.X databases, estimate Cloud 2 cardinality for a data node (or OSS system). closes https://github.com/influxdata/influxdb/issues/23356 (cherry picked from commit ef90bc830f) closes https://github.com/influxdata/influxdb/issues/23416
ef90bc830f