Add Pangolin scores to seqr 

**Is your feature request related to a problem? Please describe.**
Need ways to surface variants that are likely to impact splicing

**Describe the solution you'd like**
Add Pangolin as an in silico score

@bpblanken  will share the look up table

I'll add the ranges and any other info needed to display in seqr. 

**Describe alternatives you've considered**
NA

**Additional context**
NA