Firebase-js-sdk: WebAuthn support

[Obiwarn]

I could not find FIDO2 support. Is there a roadmap for this?

[google-oss-bot]

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[bojeil-google]

We don't currently support WebAuthn. Please file an official feature request for it. Long term, we are definitely interested in supporting it.

[sgammon]

@bojeil-google could I kindly ask the status of this feature?

[yinonov]

just experienced fingerprint authentication with ebay and it's great! really seem fit for firebase to align with edge of such technology

[rosalyntan]

Thanks for filing this feature request! This is being tracked internally at b/168498557.