EOSC IF #230

This PR addresses the EOSC IF. It modifies the previous attempt to tag the research products by removing the tag from the subject and inserting it in the element EoscInteroperabilityGuidelines added in the model to store this informaiton. The element is composed of four parts: <code, label, url, semanticRelation>.

In this implementation code and label have the same value and it is the tag previously inserted in the subject, url is always empty, and semanticRelation always assumes the value compliesWith.

We need to rethink this implementation because all the business logic is hard coded and changes should be made by a change in the implementation.

This PR addresses the EOSC IF. It modifies the previous attempt to tag the research products by removing the tag from the subject and inserting it in the element EoscInteroperabilityGuidelines added in the model to store this informaiton. The element is composed of four parts: `<code, label, url, semanticRelation>`. In this implementation code and label have the same value and it is the tag previously inserted in the subject, url is always empty, and semanticRelation always assumes the value `compliesWith`. We need to rethink this implementation because all the business logic is hard coded and changes should be made by a change in the implementation.

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EOSC IF #230

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