Add support for triggers on view

[rvkulikov]

https://stackoverflow.com/questions/451096/execute-trigger-on-view Looks like there is triggers directly on views, should support that

[rvkulikov]

• [ ] raise exception if pg_triggers.tgqual is not null (cannot convert it back) AND current user is not superuser AND it is impossible to directly patch pg_catalog

[rvkulikov]

https://www.postgresql.org/docs/13/sql-createtrigger.html https://www.postgresql.org/docs/16/catalog-pg-trigger.html