Add error utils function for handling biometric errors

[carmenlau]

Currently when encountering error in biometric api, we throw the original error from the native api to user. For user to handle the error more easily, we should provide utils function for user to identify errors, like what we did in js sdk.

https://github.com/authgear/authgear-sdk-js/blob/master/packages/authgear-react-native/src/error.ts#L82