feat(ingest): Add host field for INSDC sequences during ingest

[maverbiest]

resolves #6533 #6295

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PR Checklist

• All necessary documentation has been adapted.
• The implemented feature is covered by appropriate, automated tests.
• Any manual testing that has been done is documented (i.e. what exactly was tested?)

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[anna-parker]

@maverbiest I would do this in three steps:

1. have ingest submit new sequences with host and not hostTaxonId and hostScientificName (modify hash code correctly so that the hash doesnt change)
2. run a db surgery with an sql command to modify the data in the code (this shouldnt be in db migrations IMO as this is code for data that not every loculus user will have)
3. remove prepro code that handles the INSDC special case.

[maverbiest]

@anna-parker okay cool, thanks! I will get rid of the DB migration then and we can run it as a surgery. Regarding you point 1., could you clarify what you mean by 'modify the hash'? I thought the aim was to ensure the hash doesn't change so we don't trigger revisions? What I'm currently doing on this branch is collapsing the taxon id and scientific name fields into a single host field after the hash is computed, but could be I misunderstood

[anna-parker]

'modify the hash'? I thought the aim was to ensure the hash doesn't change so we don't trigger revisions?

yes I was unclear, I meant to modify the code for the hash calculation so that it doesnt change