Output IUPAC rather than N for sites with ambiguous sites (more than 1 call)

[Vera-D]

Is your feature request related to a problem? Please describe.
Rather than output Ns which are null regions, we should output IUPAC ambiguity at the site.

Describe the solution you'd like
List IUPAC ambiguity at site with even hits.
https://droog.gs.washington.edu/parc/images/iupac.html

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.