feat/fido-conformance-optional-up

[MasterKale]

This PR re-introduces support for FIDO Conformance-based rules for the up and uv authenticator data flags.

To leverage these rules (as might be the case for RP's seeking FIDO certification), update your calls to verifyAuthenticationResponse() to replace requireUserVerification with the new advancedFIDOConfig.userVerification option:

Before:

const verification = verifyAuthenticationResponse({
  // ...
  requireUserVerification: true
});

After

const verification = verifyAuthenticationResponse({
  // ...
  advancedFIDOConfig: {
    // UserVerificationRequirement: 'required' | 'preferred' | 'discouraged'
    userVerification: 'required',
  },
});

Setting advancedFIDOConfig.userVerification to 'required' will only require the uv flag to be true; up flag may be false. Setting it to 'preferred' or 'discouraged' will allow both up and uv to be false during verification.

This should resolve #253.