generate alignment plots via alignoth/vega?

[dpark01]

Aligned BAM -> interactive viz: https://github.com/koesterlab/alignoth

Produces static (png/svg) and interactive (offlineable html) outputs

Would need to stress test on large inputs / deep alignments

Could produce a nice pre-made file output (e.g. krona) independent of the need to load BAMs in IGV or equivalent