Add Gene-KG to Content Registry

[u8sand]

• gene
  • script to generate iframes
  • snakemake rule
  • support for gencode ids in KG filtering Simply used gene name instead
  • listing of gencode ids from KG
• anatomy
  • script to generate iframes
  • snakemake rule
  • support for UBERON ids in KG filtering
  • listing of UBERON ids from KG
• compound
  • script to generate iframes
  • snakemake rule
  • support for pubchem CIDs in KG filtering
  • listing of pubchem CIDs in KG
• general
  • verify generation works
  • "iframe-ready" rendering mode -- things like the header and footer can be removed so that it looks good in the cfde site. For example: https://app.nih-cfde.org/chaise/record/#1/CFDE:gene/nid=1 -- is from https://mii.podvis.org/cfde-ge1/#/gene_tissues?gencode_id=ENSG00000000419&width=1200&height=450&numTopTissues=10