Integrate Credential Manager with Sign in with Google

[DenBond7]

https://developer.android.com/training/sign-in/credential-manager
https://developers.google.com/identity/sign-in/android/start

[DenBond7]

Credential_Manager_1548.txt

[DenBond7]

It looks like we can't use it with scopes for now. So we will use the current realization until it is not deprecated.

[DenBond7]

Before

Authentication and authorization were as a single process

After migration to Credential Manager

Authentication will be implemented by Credential Manager
Authorization will be implemented by AuthorizationClient API

More details can be found here