feat: added clean up sql script

script/prod/clean-up.sql

@@ -0,0 +1,11 @@
+-- Deletes all verifications and pact publications that are older than 60 days,
+-- and cleans up orphan pacticipant versions and their tags.
+-- Also removes webhook execution history.
+
+DELETE FROM verifications WHERE created_at < now() - '60 days'::interval;
+DELETE FROM webhook_executions;
+DELETE FROM triggered_webhooks;
+DELETE FROM pact_publications WHERE created_at < now() - '60 days'::interval;
+DELETE FROM pact_versions WHERE id NOT IN (SELECT distinct pact_version_id from pact_publications);
+DELETE FROM tags WHERE version_id NOT IN (select consumer_version_id from pact_publications union select provider_version_id from verifications);
+DELETE FROM versions WHERE id NOT IN (select consumer_version_id from pact_publications union select provider_version_id from verifications);