Align and simplify Hibernate ORM configuration name

[emmanuelbernard]

shamrock.hibernate.orm.*
And we can move away from the JPA or Hibernate ORM names.

Things to change:

• config group
• a couple of exceptions do reference the property names so they need to align
• the documentation needs to be updated.

Proposal:

• shamrock.hibernate.dialect -> shamrock.hibernate-orm.dialect
• shamrock.hibernate.schema-generation.database.action -> shamrock.hibernate-orm.schema-generation
• shamrock.hibernate.show_sql -> shamrock.hibernate-orm.log-sql
• shamrock.hibernate.sql-load-script-source -> shamrock.hibernate-orm.sql-load-script

[n1hility]

@gsmet any update on this one? Should we just defer what remains?

[gsmet]

I'm currently working on it. Should be done by tomorrow.