Annotate Nextclade TSV with emerging haplotypes and amino acid haplotypes during ingest

[huddlej]

Context

We have at least two workflows (here and forecasts-flu) that download Nextclade TSVs and annotate emerging haplotypes and amino acid haplotypes in a new copy of each TSV.

Description

@joverlee521 points out that we could annotate these columns to the Nextclade TSV once during ingest from this repo, avoiding the redundant complexity in our workflows. This is probably the right place to end up. This approach would require us to remember to run the Nextclade workflow when we update the emerging haplotypes TSV in this repo or be content with waiting for our weekly ingest process to rerun the Nextclade workflow.