2FA for users in management API (#15607)

* Added 2FA management endpoints

* Ensure not found do not lead to forbidden results

* Do not inherit the requirement to have access to users, from the current user base class

* Updated OpenApi.json

* Handle 2FA in login scenario (only backend)

* Added the endpoint to use for client to post 2FA code

* Fixed tests and allow injecting the authentication type settings

* fix test build

* Fallback to use Constants.Security.BackOfficeAuthenticationType

* remove unused variable

* Review fixes

* Build fix

* Update src/Umbraco.Cms.Api.Management/Controllers/User/Current/DisableTwoFactorProviderCurrentUserController.cs

Co-authored-by: Sven Geusens <geusens@gmail.com>

* Handle case where 2fa provider is already setup

---------

Co-authored-by: Sven Geusens <geusens@gmail.com>

src/Umbraco.Core/Security/NoopSetupTwoFactorModel.cs

@@ -0,0 +1,8 @@
+namespace Umbraco.Cms.Core.Security;
+
+/// <summary>
+/// A No-operation implementation of the ISetupTwoFactorModel.
+/// </summary>
+public class NoopSetupTwoFactorModel : ISetupTwoFactorModel
+{
+}