Typescript adjustments + search param array handling

[cdoe]

Change Summary

1. Add curated param to SearchResponseHit type
2. Improve drop field schema for collection.update()
   • Prior implementation required "type" to be specified when dropping a field. Now only name, and drop: true are required/valid.
3. Improved handling of searchParams
   • When specifying search params that are potentially comma separated, an array can now be passed which automatically joins the values with a comma into one string to then pass along to the search endpoint.
   • See commit for more detail.

PR Checklist

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[jasonbosco]

Thank you for the PR, especially the improvement around accepting arrays! 🙏