feat: Clump

[mlamkin7]

We've addded a new subcommand clump. Clump operates similar to Plink's --clump option except our version can accommodate tandem repeats such as STRs.

Example Usage:

haptools clump \
  --summstats-snps tests/data/test_snpstats.linear \
  --gts-snps tests/data/simple.vcf \
  --clump-id-field ID \
  --clump-chrom-field CHROM \
  --clump-pos-field POS \
  --out test_snps.clump