feat: switch to modular firebase sdks internally

[prescottprue]

Is your feature request related to a problem? Please describe.
Switch to v9 internally for firebase - this will likley be a breaking change as namespaced imports will be used which are available in v9 and later only

Describe the solution you'd like

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Additional context

[prescottprue]

#564

[prescottprue]

#501 (comment) calls out the need for more than two wheres - with the modular SDK OR is also possible with 2+ wheres: https://firebase.google.com/docs/firestore/query-data/queries#web-modular-api_14