feat(insights): set algolia credentials per event when supported

[dhayab]

This PR sends events with additional parameters containing Algolia credentials, when the Insights client supports it.

Now, when the Insights client version supports it, we send events with an additional parameter that contain Algolia credentials relevant to the items. This makes it possible to have different Algolia sources that each send events to their corresponding Insights endpoints.

All relevant methods of the Insights API we provide (on top of the Insights client) are updated to require an items property in their payload, instead of the now deprecated objectIDs property.

FX-2277

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

[dhayab]

All object-based event methods are updated to accept items instead of objectIDs, from which we can retrieve the relevant Algolia credentials to craft the additional parameters that are then sent with the event payload.

Facet/filter-based event methods are not touched, as we don't have a use for them in the context of Autocomplete.

[FabienMotte]

Looks good to me, nice work! 👏

[sarahdayan]

Can you highlight what changed? Since there was a file rename the diff shows everything as new.

[dhayab]

Sure, this should give you the changes before the file rename: e446d48#diff-9d876eb2a027f19903ce6ce0aa98bca3222a13857a61eb1751dfd11eda392552.

[Haroenv]

seems logical, let's go!