Add log file for GO-CAM MF/BP/CC without evidence

[ValWood]

this will be a lot!
I'm doing a lot of backfilling as info becomes available in PomBAse to keep PomBase and GO-CAM aligned.
But it will be good to have a list of the missing evidences.

[kimrutherford]

We currently don't parse the evidence from GO-CAM data files because we haven't needed it before. That will need fixing first.

[ValWood]

If that a pain I can ask GO to put it on their list

[kimrutherford]

Parsing the evidence shouldn't be a problem. It's something we'll need to do down the track anyway,

[kimrutherford]

I started implementing but I realised that it's going to be easier once we're using the new gocam-py model:

• Add support for the gocam-py model pombase-gocam#28

So I'm going to put this on hold.