Port Seqr-Sample-QC into v03_pipeline

[bpblanken]

Placeholder ticket with some notes:

Seqr-Sample-QC
	Sequencing metrics
	if it's exome and external
		Platform Level Computation
			For exome samples
			coverage stats, figure out which platform it came from.
			hail function sample_qc, figure out outliers.
			Import tsv into seqr.
	if it's internal
		grab the platorm field
	population inference
	hail's sample qc
	supposed to be after every callset, but is ~ once a quarter.

https://github.com/broadinstitute/tgg_methods/blob/master/tgg/seqr_scripts/seqr_sample_qc.py

[bpblanken]

@larrybabb @sjahl here is the joint methods/seqr work.