Merge products currently defined as provided through multiple resources

[caufieldjh]

Some resource pages currently define products that have the same source, just in different serializations, etc.
e.g., there's a page for Biolink itself: https://github.com/Knowledge-Graph-Hub/kg-registry/blob/main/resource/biolink.md
but the page for Automat (https://github.com/Knowledge-Graph-Hub/kg-registry/blob/main/resource/automat.md) defines biolink_automat as one of its products.
In my view, biolink_automat should be listed on the Biolink page, with a value (at least a tag) indicating its source is Automat.

Similar issue for resources like Drugbank - the metadata on https://github.com/Knowledge-Graph-Hub/kg-registry/blob/main/resource/drugbank.md all refers to the obo-db-ingest version of this resource, which is fine if you're already familiar with Drugbank, but otherwise confusing.
The top-level metadata for a resource should be about that resource (in this case, Drugbank) while the products should contain metadata about their own provenance.