Add additional products for CHEBI

[cmungall]

We have this ticket to ensure all subsets are documented: #466

Chebi produces different subset products (e.g. lite, core):

ftp://ftp.ebi.ac.uk/pub/databases/chebi/ontology/

These aren't described in the README:
ftp://ftp.ebi.ac.uk/pub/databases/chebi/README.txt

@G-Owen should these be registered? Do you have a description of the contents?

Chebi also produces a nightly snapshot, we can register this as a distinct product/PURL

[nlharris]

is this done? if not, does it still need to be done?

[matentzn]

It would make sense! I would not close it.

[nlharris]

but isn't this about an external ontology? should we flag @G-Owen again?

[matentzn]

I would close it now, as I don't see it anymore a mandate of OBO foundry to chase ontology providers to document their artefacts. They should come to us to document!

[cthoyt]

@matentzn note that there are now annotations for closed reasons - you can "close as completed" or "close as not planned"

[matentzn]

Thanks @cthoyt