I'm trying to do a cost estimation for a self hosted Signoz instance. Especially I'm interested in doing a forecast for storage requirements of the ClickHouse DB (Disk and S3 Cold Storage). I already collected some data from one of our servers. Is it somehow possible to map the otelcol_signoz_metric_points_bytes, otelcol_signoz_logs_bytes and otelcol_signoz_spans_bytes metrics to an actual DB storage consumption?