- re-enable the basic-type tests in the `documentation` module
- fix basic-type resolution in various cases from tests in both `hibernate-core` and `documentation`
- updated the basic_types.adoc user-guide section + moved much of the "legacy" discussion to an appendix
- fixed missing impls of the optional contract `org.hibernate.type.AdjustableBasicType`
- improved handling of `NationalizationSupport` offered by a Dialect
NOTE :
- changes to `ColumnTransformerTest` are related to "composite basics" not being supported, not problems with `ColumnTransformer`.
- final failure in `org.hibernate.userguide.mapping.basic` is `SubselectTest#testRefreshLifecycle` which actually fails because refresh is not working properly