convert NCBItaxon obo to json and create subset using ROBOT tool

[realmarcin]

source NCBItaxon obo file from OBOFoundry

use ROBOT to select subgraph for bacteria/archae/viruses

[realmarcin]

@jayrbolton here is a ticket if it helps to track/discuss

[jayrbolton]

Thanks. The source file can be found in /kbase/ke/data/NCBI_Tax. I'll build a small docker container that runs the ROBOT cli for docker03 soon-ish.