allow to use custom sort_by parameter in the request

[foodelix-admin]

Change Summary

when using useConfigure hook from react-instantsearch-hooks-web it is now possible to put sort_by parameter under the additionalSearchParameters object

useConfigure({
//...other configurations
additionalSearchParameters: {
sort_by: your sort rules,
// for example you can use it like this
// sort_by: location(${activeSearchRegion?.lat}, ${activeSearchRegion?.lon}):asc,
},
})

PR Checklist

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[jasonbosco]

This should already work without the changes in this PR.

In this line notice how the existing code has snakeCasedAdditionalSearchParameters.sort_by. That just uses params.additionalSearchParameters.sort_by after accounting for collection specific parameters, case sensitivity, etc.