To support biometric authentication for the Mac OS app

[sallymoc]

The method used to check if the device supports/has configured biometric authentication is apparently not available for Mac OS

Connecting to VM Service at ws://127.0.0.1:63950/F2pbDHYazKw=/ws
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: MissingPluginException(No implementation found for method getAvailableBiometrics on channel plugins.flutter.io/local_auth)
#0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:332:7)

#1 MethodChannel.invokeListMethod (package:flutter/src/services/platform_channel.dart:520:35)

#2 DefaultLocalAuthPlatform.deviceSupportsBiometrics (package:local_auth_platform_interface/default_method_channel_platform.dart:65:10)

#3 _SignInState.initState. (package:qubic_wallet/pages/auth/sign_in.dart:78:35)

I found this flutter/flutter#140685 that might be useful.

[depombo]

following

[Qubic-Hub]

@sallymoc According to https://pub.dev/packages/local_auth it seems that MacOS is now supported. Maybe we need to update ?

[sallymoc]

Correct @Qubic-Hub . With this config in the yaml file

local_auth: ^2.3.0

is 'works'. I have some issues when debugging but seems not to be related to the library itself and happening only in debug mode. Need to test a bit more.

[sallymoc]

With the upgrade of the library, iOS authentication in release mode works fine. Debug mode is failing with or without this change. I reported the following issue #92.

[sallymoc]

@icyblob could you please try this and let us know if works for you so we can close it?

[icyblob]

I can confirm that the MacOS bio authen works with the Qubic Wallet MacOS release from @sallymoc