[SG-763] Store the fact that a Passwordless request was denied in the AuthRequest table (#2363)

* Added migrations for sqlserver and mysql

* Added migrations for postgres

* renamed mysql migration script to make naming uniform

* introduced approved field to the update auth request controller;This change would keep track of denied passwordless requests

* Recreated the authRequestView, introduced the approved field to the create procedure and updated the response model

* Formatted code

* fixed incorrect syntax in the AuthRequest_Create.sql SP

util/MySqlMigrations/Migrations/DatabaseContextModelSnapshot.cs

@@ -28,6 +28,9 @@ namespace Bit.MySqlMigrations.Migrations
                         .HasMaxLength(25)
                         .HasColumnType("varchar(25)");
 
+                    b.Property<bool?>("Approved")
+                        .HasColumnType("tinyint(1)");
+
                     b.Property<DateTime?>("AuthenticationDate")
                         .HasColumnType("datetime(6)");