feat: support new arch

[vonovak]

BREAKING CHANGE: some function signatures have changed

• isSignedIn() has become hasPreviousSignIn()
• a few function calls that were async are now sync: hasPreviousSignIn(), getCurrentUser()
• flow typings have been removed. Let me know if you need them
• uses latest underlying SDKs

Web support and One-tap sign in functionality remain sponsor-only. I want to thank my sponsors for their support! It allowed me to work on New Arch support, bridgeless mode, and on PRs to the Google Sign in iOS SDK here and here ❤️ .

closes #1259 closes #1265

[github-actions[bot]]

:tada: This PR is included in version 12.0.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: