Custom biometric key alias

[ricardoribas]

From the class ReactNativeBiometrics I wonder if is possible to add a custom key alias. The main purpose of this feature request is to allow multiple authentication mechanisms in the same application, so we can differentiate between each other.

In summary, the use case would follow:

1. authenticate in alias 1 and use biometric alias 1;
2. try to authenticate in a different account (alias 2) and use biometric. The alias 2 would fail on our backend as the signature is for alias 1.

[sbaiahmed1]

Hey you can check this one https://github.com/sbaiahmed1/react-native-biometrics

Feel free to star, test and report if any issue happens