feat(preset-algolia): attach algolia credentials on hits

[dhayab]

This PR adds an __autocomplete_algoliaResultsMetadata property on each hit returned from an Algolia source, that includes the credentials of the application it comes from. This will help us send events to the appropriate location at a later stage.

Note
The getAppIdAndApiKey utility is a simplified version of the one that comes from InstantSearch. Support for v3 search clients is not necessary so it has been removed.

FX-2276

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Sandbox	Source
@algolia/autocomplete-example-github-repositories-custom-plugin	Configuration
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@algolia/autocomplete-example-playground	Configuration
@algolia/autocomplete-example-preview-panel-in-modal	Configuration
@algolia/autocomplete-example-react-renderer	Configuration
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@algolia/autocomplete-example-reshape	Configuration
@algolia/autocomplete-example-vue	Configuration

[Haroenv]

this works I think, naming could be edited possibly

[BTrain137]

Hi @dhayab, I am not sure if we are using autocomplete incorrectly, but we ran into an issue where the transporter wasn't checked and the JS code was trying to pull headers from undefined. Could you help with this? We have a fix in a place where we are using version 1.8.3 of autocomplete-preset-algolia. We could be using it wrong, I am not sure.

https://github.com/algolia/algoliasearch-shopify/pull/1520

[dhayab]

Hi Bryan, this is probably because you have the v3 of algoliasearch in your dependencies. Autocomplete relies on the v4, which is what causes the issue right now.

If you're not using the javascript search client directly, you can safely update it to the latest v4 version as InstantSearch and Autocomplete have support for it.

[BTrain137]

Ahhh wonderful thank you!