add rna splice step

fix borzoi - muatation step (main_borzoi;PREDICT_EXPRESSION;create_mut()) onyl POINT MUTATIONS add INDEL MUATAIONS

Borzoi can have alternativ chromosoms and chrUn_* as well, VCF2PROT CAN NOT have them. This will cause discrepancies in the code.

Name output files from borzoi ==> need to have patients name/id