feat: INDATA-552 add pg_class-based table size metrics to postgres_exporter#2096

valigula wants to merge 3 commits intodevelopsupabase/postgres:developfrom

andres/INDATA-552-investigate-reltuples-based-table-stats-for-exportersupabase/postgres:andres/INDATA-552-investigate-reltuples-based-table-stats-for-exporterCopy head branch name to clipboard