Add support for more insertion formats

Currently we are only focused on insertions found in CIViC, MOA, and PMKB which have the format `ins` (`NC_000023.10:g.32867861_32867862insT `, `NM_004006.2:c.169_170insA`) for transcripts and `ins` (`NP_005219.2:p.Gly1209_Ala1210insGlyLeu`) for amino acids. We need to add support for other insertion formats found here: https://varnomen.hgvs.org/recommendations/DNA/variant/insertion/ and https://varnomen.hgvs.org/recommendations/protein/variant/insertion/