Missing annotation in V2 seqvars results

[holtgrewe]

Is your feature request related to a problem? Please describe.
While we have a lot of annotations already, we are missing some. Here is a batch that we need.

Describe the solution you'd like
Implement the following annotations:

• variant location
  • intron or exon
  • intron/exon rank
  • total number of exons/introns
• scores
  • REVEL
  • MMSplice
  • ClinGen curation SOP lists SIFT, PolyPhen2-HDIV, PolyPhen2-HVAR, LRT, FATHMM, PROVEAN, MetSVM, MetLR, CADD, FATHMM-MKL, fitCons

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.