Migrate JSON Schema builder classes from Spring Data REST to Spring HATEOAS

[gregturn]

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The builders to construct an ALPS document reside within this project and are leveraged by Spring Data REST when building profiles.

The JSON Schema code should also be migrated to Spring HATEAOS for similar purpose. Users should be able to assemble a JSON Schema compliant document manually directly with Spring HATEOAS, while Spring Data REST can still leverage thta when it autobuilds the same links.