ingest: canonicalize strain names

[joverlee521]

Context

Currently, the ingest pipeline accepts any format for the strain names.
We should canonicalize them to have prettier names for display in Auspice and to have a way to deduplicate sequences.

Description

We need a clear standard format for strain names. If we follow the existing pattern we use for other pathogens (e.g. SARS-CoV-2), this would be <country>/<sample_id>/<year>

Once we've decided on a format, we should add necessary transforms to ingest/bin/transform-strain-names.

[corneliusroemer]

To bump this: there's a strain name from Sweden that's particularly unhelpful: Lesion for genbank accession OX009124