Implement region filter
Closes LA-1254
Create a region filter to replace UTR and intron-filters. The new filter works on genomic position, but also reverts to HGVSc (like before) to avoid filtering out variants with a severe consequence in a different transcript, or variants with a mismatch in position between HGVSc and genomic position (can happen due to left-alignment in transcript-direction).
Edited by Svein Tore Koksrud Seljebotn