Release/2.1.0

[Aksi0m]

This PR adds support for specifying authenticator types when doing biometric operations. The biometric lib supports 3 auth types:

• BIOMETRIC_STRONG - Any biometric (e.g. fingerprint, iris, or face) on the device that meets or exceeds the requirements for Class 3 (formerly Strong), as defined by the Android CDD.
• BIOMETRIC_WEAK - Any biometric (e.g. fingerprint, iris, or face) on the device that meets or exceeds the requirements for Class 2 (formerly Weak), as defined by the Android CDD.
• DEVICE_CREDENTIAL - The non-biometric credential used to secure the device (i.e. PIN, pattern, or password).

The new main screen of the example app now displays the appropriate information about each of these authenticators. The specific authenticator is disabled enabled depending on the device support for that authenticator type.

Alongside these changes the new version includes a new Reason type that is dispatched in the onResult callback - SECURITY_UPDATE_REQUIRED. This is dispatched in case a security update is needed. Documentation ref:

A security vulnerability has been discovered with one or more hardware sensors. The affected sensor(s) are unavailable until a security update has addressed the issue.

[Aksi0m]

Thanks for the review, thanks to you and some additional test cases I did find a bug in the validator method. Should be ready now for the review. @igortepavac I am adding you too since you like to peak :D

[Aksi0m]

I've created a test build in one of our internal apps with this version of goldfinger integrated. Hrvoje will use that build to cover the usual test cases in order to verify if the Goldfinger 2.1.0 is good to go. cc @JonatanPlesko

[Aksi0m]

Testing is done. We have 🟢 to release. Let's do this! 🎉