(api): fix CSV feature upload [MRXN23-249, MRXN23-246]

[yulia-bel]

CSV feature upload: insert temporary data in bulk and in chunks, change project sources

Overview

This PR adds small fixes for Id0 feature upload via CSV file:

1. Saving csv data in temporary storage in (apiDb).features_amounts is fixed to be done in bulk, divided in chunks
2. After successful insert of all feature data in relevant tables, project sources is changed to 'legacy_import' for correct amount usage during runs
3. Small test update to check projects.sources change

Designs

Link to the related design prototypes (if applicable)

Testing instructions

Please explain how to test the PR: ID of a dataset, steps to reach the feature, etc.

Feature relevant tickets

Link to the related task manager tickets

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Checklist before submitting

• Meaningful commits and code rebased on develop.
• If this PR adds feature that should be tested for regressions when
  deploying to staging/production, please add brief testing instructions
  to the deploy checklist (docs/deployment-checklist.md)
• Update CHANGELOG file

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Name	Status	Preview	Comments	Updated (UTC)
marxan	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 24, 2023 4:08pm

[hotzevzl]

thanks @yulia-bel.

I suggest to merge this as-is. As we've been discussing, we know we'll need to make this whole workflow work much faster, but that's a separate concern to me - I wouldn't cram more stuff into this PR.

I've created https://vizzuality.atlassian.net/browse/MRXN23-256 to track profiling and performance work on this.