New metric definition feature: re-routing of metrics
New metric definition feature: re-routing of metrics

Based on the "metric_storage_name" metric attribute. Enables to have
slightly different datasets with the same name. Main use case - to
implement hiding of "stat statements" query texts in a humane way.

cybertec-postgresql/pgwatch2,cybertec-postgresql/pgwatch2,cybertec-postgresql/pgwatch2,cybertec-postgresql/pgwatch2