Parse a VCF file from Srelka 2, which stores for PASS SNVs the read depth of the alleles in the nornmal and tumour
load_VCF_Strelka(file)
is Strelka 2 vcf file path
Allele depths for normal and tumour for all PASS autosome SNVs
# not run
if (FALSE) {
load_VCF_Strelka("Myfile.vcf")
}