Use JPA criteria instead of Hibernate criteria (which is deprecated) in GORM

Some discussion with Hibernate team

https://discourse.hibernate.org/t/deprecation-of-hibernate-criteria-and-how-it-we-can-still-prevent-it/788/12?u=graemerocher

Current known problems:

* Query By Example not supported
* Restrictions.sqlRestriction method for custom SQL restrictions

Start with the linked Hibernate discussion and locate GORM's current Hibernate Criteria integration. Check how Query By Example and Restrictions.sqlRestriction are handled, then compare those paths with the JPA Criteria approach. Done means replacing the deprecated Hibernate Criteria usage without losing support for both listed cases, with regression coverage.

Written by the indexing model from the issue text.