AIP should permit multiple VCFs

[MattWellie]

For GATK-SV we're using whole-cohort calling. For gCNV we're using batch calling.

For gCNV a full callset may span several VCF files/MatrixTables

Permit the addition of multiple separate VCFs in the ValidateMOI task

• that feels like the simplest change, except that we should probably deactivate the analysis entries for older batches

~Maybe all input data from the same source should be done in the same hail runtime to prevent clashing checkpoints etc.~

That shouldn't matter, SV results don't use a checkpoint... yet. Maybe if we got more categories involved.

[MattWellie]

Updated... might work, who knows