New: Use ASP.NET Core instead of Nancy

Co-Authored-By: ta264 <ta264@users.noreply.github.com>

src/Sonarr.Api.V3/Notifications/NotificationController.cs

@@ -0,0 +1,16 @@
+using NzbDrone.Core.Notifications;
+using Sonarr.Http;
+
+namespace Sonarr.Api.V3.Notifications
+{
+    [V3ApiController]
+    public class NotificationController : ProviderControllerBase<NotificationResource, INotification, NotificationDefinition>
+    {
+        public static readonly NotificationResourceMapper ResourceMapper = new NotificationResourceMapper();
+
+        public NotificationController(NotificationFactory notificationFactory)
+            : base(notificationFactory, "notification", ResourceMapper)
+        {
+        }
+    }
+}