Create managed PostgreSQL 16 cluster yc

Provision HA PG16 cluster; note: pick s3 preset for prod, not burstable b-class

yc managed-postgresql cluster create --name <name> --environment production --postgresql-version 16 --network-name <name> --host zone-id=ru-central1-a,subnet-name=<name> --resource-preset s3-c2-m8 --disk-size 50 --disk-type network-ssd