Replace `add-migrated-collections` with Liquibase migrations (#20407)

* Rewrite add-migrated-collections

* Add new tests for the new migrations

* Truncate tables (removing values added by Liquibase migrations) before copying

* Clean namespaces

* Use TRUNCATE TABLE ... CASCADE for Postgres copy

* Update test

* Sort namespaces

* Remove stray println

* Fix Postgres TRUNCATE TABLE behavior

* Disable DB constraints before truncating tables

* Fix fussy postgres