Simplify Android Biometric Availability API

[kober32]

As of now, this issue is for broader discussion that should end in a more concrete task (based on discussion with @petrdvorak).

We commonly support our customers with questions about Android biometrics availability, which is fairly documented, but it's still a common issue.

Based on the feedback, the API could be further simplified. We could

• add new API alá canSignNextRequestWithBiometrics that would wrap both system-level and PA level check
• 1 more detail API with several properties (pseudocode):

class BiometricsStatus {
   // practically biometricsFactorPresentForSigning && sensorAvailableOnSytemLevel
   var canSignNextRequestWithBiometrics: Boolean

   var biometricsFactorPresentForSigning: Boolean
   var sensorAvailableOnSytemLevel: Boolean

   // more details about the system sensor
   var sensorDetailStatus: BiometricsSensorStatus // values like notEnrolled, notAvailable, ...
}

Current docs: https://developers.wultra.com/products/mobile-security-suite/2022-12/powerauth-mobile-sdk/PowerAuth-SDK-for-Android#check-biometric-authentication-status