Move Claim annotations from rt-rs-security-xml to the api module

Claim, Claims and ClaimMode annotations currently residing in the rt-rs-security-xml module are generic enough and can be applied to JAX-WS and JAX-RS related code so the first step is to move them to the api module. The security related classes can be migrated in its own rt-security module in due time.

At the next stage the actual data classes keeping the SAML (or other language) claims can be pushed to the api. This will in turn make it possible to move the code dealing with enforcing the annotations to the api.