[FR] Make it possible to send an array of items in a parameter

[revolt3r]

Feature proposal

• Firebase Component: Analytics

Make it possible to send an array of items in a parameter (for example to handle Economy Transaction Events inside a game - so that one could specify the item Ids and the amount of items, in addition to transaction price and other data)

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[nindim]

This would likely resolve this other ticket which has bene open for over 3 years: https://github.com/firebase/quickstart-unity/issues/713