[FEATURE] Passkey integration with Android CredentialManager

[jmandel]

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Is your feature request related to a problem? Please describe.

Now that more web sites and apps are supporting passkeys, it'd be nice to store my passkeys in Android-Password-Store, alongside my passwords.

Describe the solution you'd like

Android-Password-Store already integrates with Android's autofill infrastructure. Supporting passkeys on Android 14+ would be consistent and helpful functionality. https://developer.android.com/training/sign-in/credential-provider#handle-queries-passkey-creation documents the requirements.

Describe alternatives you've considered

Just storing passkeys in Google's OS-bundled password manager. But I am a happy user of pass / Android-Password-Store :-)

Additional context

No response