New: NetImport Lists Grouped by Type

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

src/NzbDrone.Core/NetImport/INetImport.cs

@@ -7,6 +7,7 @@ namespace NzbDrone.Core.NetImport
         bool Enabled { get; }
         bool EnableAuto { get; }
 
+        NetImportType ListType { get; }
         NetImportFetchResult Fetch();
     }
 }