Add new partial pattern to help queries

[rays22]

If applied, this commit will fix #904.

[sbello]

@matentzn I don't think we wanted this to be a term creation pattern, correct? I thought what you wanted was to capture the standard for adding subclass axioms to existing terms to enrich the anatomy cross-references in the ontology. I don't think this should follow the standard set up for a UPheno pattern.
Anna and I discussed this with @rays22 at today's meeting

[matentzn]

I think its great to have this as a pattern - remember patterns are not only to "create new terms", but also to capture/document certain modelling decisions. I have some feedback on the PR, but it is definitely good to have these as a pattern.

[sbello]

@matentzn I wasn't suggesting we not have the pattern but just questioning the need to have the term creating parts like name, definition, synonyms in the pattern. Having these here suggests that this pattern could be used to generate a new term and that is not the purpose in this case.

[matentzn]

You are 100% correct on that @sbello - sorry, misunderstood you. @rays22 we only need the subclass axiom template from the generative features.