Require 2FA token in order to disiable 2FA. Added 2FA recovery code to data/domain model and exposed recover and regenerate 2FA APIs

src/Sql/dbo/Stored Procedures/User_Update.sql

@@ -10,6 +10,7 @@
     @TwoFactorEnabled BIT,
     @TwoFactorProvider TINYINT,
     @AuthenticatorKey NVARCHAR(50),
+    @TwoFactorRecoveryCode NVARCHAR(32),
     @CreationDate DATETIME2(7),
     @RevisionDate DATETIME2(7)
 AS
@@ -29,6 +30,7 @@ BEGIN
         [TwoFactorEnabled] = @TwoFactorEnabled,
         [TwoFactorProvider] = @TwoFactorProvider,
         [AuthenticatorKey] = @AuthenticatorKey,
+        [TwoFactorRecoveryCode] = @TwoFactorRecoveryCode,
         [CreationDate] = @CreationDate,
         [RevisionDate] = @RevisionDate
     WHERE