Load all GREGoR VCFs

[quinnwai]

Some work, even if just "waiting", to load each GREGoR VCF. Will need to actually load all of the VCFs into the node. Mainly to ensure we can do this 20-or-so times and also that we're not tripped up by edge cases. Could likely also front-load any problems here by just generally checking the consistency of each VCFs format across GREGoR.

Could be lumped into the load VCF epic as final testing step or separate.

Acceptance Criteria

For 5-10 variants in each VCFs...

• Able to query the variants in non-VRS format (gnomad) and get a VRS hit in db
• When ask for CAF for variant expressed as gnomad, get response that matches the annotation in original VCF
• -When ask for CAF for variant expressed as VRS, get response that matches the annotation in original VCF