migration for indexes

server/xpub-model/migrations/20210701112614_add_audit_index.js

+exports.up = (knex, Promise) =>
+  knex.raw(`CREATE INDEX IF NOT EXISTS audit_manuscript_index on audit.audit_log(manuscript_id);
+CREATE INDEX IF NOT EXISTS audit_job_index on audit.job_log(job_name);`)
+
+exports.down = (knex, Promise) =>
+  knex.raw(`DROP INDEX IF EXISTS audit_manuscript_index;
+DROP INDEX IF EXISTS audit_job_index;`)