Renames .vcf files.
Updates sample names in the VCF header.
Extracts specific regions of interest from a VCF file.
Merges VCF files using bcftools merge.
Generates a correspondence table for "Otherinfo[num]", "SampleID", and "[SampleGroup]SampleID".
Converts GT fields in "multianno.txt" to ".", "(het)", or "(hom)".
Assembles "[SampleGroup]SampleID(GT)" strings into a single string.