Adding node attributes module

[colleenXu]

After talking with Andrew, here are the current ideas:

• this module can be "executed alone / independently", aka it can take an arbitrary TRAPI response with a message.knowledge_graph.nodes section and return the TRAPI response with node attributes added to the nodes
• we would plan to use this module internally (probably as a step at the end of the query process, like results assembly)

Here are some topics we may want to work through:

• what info we want as node attributes (from what is available in biothings APIs...)
• How will we retrieve this info, starting from the node IDs / semantic types?
• ideally the node attributes will have "attribute_type_id" values that match what Translator expects. This will have to be set somewhere in the new code...and This involves some review with @colleenXu.

[colleenXu]

Note that the code will likely be very similar to the old ID resolver, but focused on node attributes rather than finding equivalent IDs

[colleenXu]

I believe this is linked to these PRs:

• Integrate attribute getter into ID resolution process. biomedical_id_resolver.js#78
• Annotate input as well as output entity IDs during query process. call-apis.js#34

[colleenXu]

@marcodarko some feedback: I'd like clear documentation (here on the issue, a README, a doc, something) on how to add / edit node attributes. I think that would make it easier for me and Andrew to contribute.

[andrewsu]

node attributes are handled in https://github.com/biothings/biomedical_id_resolver.js/blob/main/src/config.ts with the mappings under additional_attributes_mapping

[marcodarko]

Also related to this issue: biothings/call-apis.js#34 linking for ref.

[colleenXu]

I'm closing this ticket since it's been deployed.

However, I plan to open a new ticket for reviewing the node attributes / perhaps adding some more...