Pg-export

* Add rules for tables
* From 26
* Add generated columns
* Fix typo for parallel option (restrict -> restricted)

- Add support for domains
- Fixed bug with incorrect hiding of types starting with _ (not only implicit array types)
- Fixed bug with comment on types

- add parameter --timezone for correct collapse partitions
- fix greenplum load aggregates as functions
- add parameter --echo-queries for debugging
- refactoring

* Add publication objects
* Add statements "alter table ... replica identity ..."
* Add option --version