PG Monitoring review Query analysis, basic

Related to the current monitoring we need to review:

• ⛔ Query analysis, basic (with queryid, query text), based on pg_stat_statements
  • ⛔ Top-N by total_time
  • ⛔ Top-N by average query runtime
  • ⛔ Top-N by calls
  • ⛔ Top-N by rows
  • ⛔ Top-N By temp blocks - read/write
  • ⛔ Top-N by shared_blks hit/read, written/dirtied
  • ⛔ Top-N by block read and write time

Acceptance criteria:

• Fix the metrics and the dashboard