Update Reactome in kg-registry

[caufieldjh]

Description

Add Reactome to the kg-registry.

Resource Details

• Domain: Pathways / molecular processes
• Paper: Yes — Reactome graph DB / NAR papers
• Website: Yes — https://reactome.org/
• API: Yes — REST API / graph DB / SPARQL tools
• Downloadable graph data: Yes — Neo4j graph / RDF downloads

Parent Issue

Relates to #48 - Survey environmental KGs and add missing ones

Additional Notes

Comprehensive pathway database with graph database backend and multiple access methods for systems biology research.

[caufieldjh]

Reactome is already in there, but needs improvements:

• Description
• More Products