New: Add import date to upgrads in CustomScript and Webhook connections

Closes #2945

src/NzbDrone.Core/Notifications/CustomScript/CustomScript.cs

@@ -94,6 +94,7 @@ namespace NzbDrone.Core.Notifications.CustomScript
             if (message.OldFiles.Any())
             {
                 environmentVariables.Add("Lidarr_DeletedPaths", string.Join("|", message.OldFiles.Select(e => e.Path)));
+                environmentVariables.Add("Lidarr_DeletedDateAdded", string.Join("|", message.OldFiles.Select(e => e.DateAdded)));
             }
 
             ExecuteScript(environmentVariables);

src/NzbDrone.Core/Notifications/Webhook/WebhookTrackFile.cs

@@ -1,3 +1,4 @@
+using System;
 using NzbDrone.Core.MediaFiles;
 
 namespace NzbDrone.Core.Notifications.Webhook
@@ -17,6 +18,7 @@ namespace NzbDrone.Core.Notifications.Webhook
             ReleaseGroup = trackFile.ReleaseGroup;
             SceneName = trackFile.SceneName;
             Size = trackFile.Size;
+            DateAdded = trackFile.DateAdded;
         }
 
         public int Id { get; set; }
@@ -26,5 +28,6 @@ namespace NzbDrone.Core.Notifications.Webhook
         public string ReleaseGroup { get; set; }
         public string SceneName { get; set; }
         public long Size { get; set; }
+        public DateTime DateAdded { get; set; }
     }
 }