[PS-589] Fix emergency contact takeover device verification and endpoints for its settings (#2016)

* Added UnknownDeviceVerificationEnabled on User that is turned off when emergency contact takes over the account. Also added endpoints to get and update 2fa device verification settings. And Updated migrations & tests

* Applied dotnet format

* Fixed method rename call on TwoFactorController

* PS-589 Format fixes

* PS-589 changed UnknownDeviceVerificationEnabled to be non-nullable

src/Core/Services/IUserService.cs

@@ -79,5 +79,6 @@ namespace Bit.Core.Services
         Task<bool> VerifyOTPAsync(User user, string token);
         Task<bool> VerifySecretAsync(User user, string secret);
         Task<bool> Needs2FABecauseNewDeviceAsync(User user, string deviceIdentifier, string grantType);
+        bool CanEditDeviceVerificationSettings(User user);
     }
 }