Add first version of first set of MeSH mappings

[rays22]

This PR intends to add the first set of OBO Ontology (CL, UBERON, GO, OBA) term mappings to a set of MeSH terms.

[jamesamcl]

Thanks @rays22 -

My initial comments:

• We should be using skos:exactMatch as with other sssom mapping sets rather than owl:equivalentClass
• Labels are missing from the tsv which makes this difficult to check
• Yaml header is missing from the tsv
• Other metadata also missing; e.g. were these all manual curation?
• Related to above, where do the confidence scores come from?

[jamesamcl]

@matentzn would welcome your feedback too

[rays22]

• We should be using skos:exactMatch as with other sssom mapping sets rather than owl:equivalentClass
• Labels are missing from the tsv which makes this difficult to check
• Other metadata also missing; e.g. were these all manual curation?
• Related to above, where do the confidence scores come from?

@jamesamcl ,
The mp_hp_example* files that use owl:equivalentClass had been automatically created by the mapping-commons github template when I created the repo. I will remove them.

I will investigate this:

• Yaml header is missing from the tsv

[rays22]

• When you create mapping registries, please make sure they are registered here: https://github.com/mapping-commons/mapping-commons.github.io/blob/main/mapping-server.yml