Move DELLY stats from `intermediate` to `QC` dir

[Faizal-Eeman]

    Looks good. Unrelated to this PR but I think the stats files should go to the `QC` directory 

/hot/software/pipeline/pipeline-call-gSV/Nextflow/development/unreleased/mmootor-replace-dockerhub-with-GH-packages/discovery-CPCG0196-B1-A-partial-F16/call-gSV-4.0.0/CPCG0196-B1/DELLY-1.1.3/intermediate/run_gCNV_vcfstats_RTGTools
/hot/software/pipeline/pipeline-call-gSV/Nextflow/development/unreleased/mmootor-replace-dockerhub-with-GH-packages/discovery-CPCG0196-B1-A-partial-F16/call-gSV-4.0.0/CPCG0196-B1/DELLY-1.1.3/intermediate/run_gSV_vcfstats_RTGTools

@yashpatel6 anything else to add?

Originally posted by @tyamaguchi-ucla in #77 (review)

[Faizal-Eeman]

RTGTools stats!