Add cancelable biometric authentication

[hvge]

Right now, once the system biometric authentication dialog is displayed then the application has no control over it. We had a few questions in the support channel whether it's possible to cancel such dialog from the application after some inactivity. So, we should introduce a new API function where the promise will return a cancelable object and the actual result will be provided via the callback from the native code.

In the current 1.7.x branch of native SDK this is doable on Android platform, but on iOS, it require at least 1.7.5 version.

Depends on wultra/powerauth-mobile-sdk#495