Fixed: Delete files from Artist Mass Editor not actually deleting files

Co-Authored-By: Mark McDowall <markus101@users.noreply.github.com>

src/Lidarr.Api.V1/Artist/ArtistEditorModule.cs

@@ -102,7 +102,7 @@ namespace Lidarr.Api.V1.Artist
 
             foreach (var artistId in resource.ArtistIds)
             {
-                _artistService.DeleteArtist(artistId, false);
+                _artistService.DeleteArtist(artistId, resource.DeleteFiles);
             }
 
             return new object();

src/Lidarr.Api.V1/Artist/ArtistEditorResource.cs

@@ -13,6 +13,7 @@ namespace Lidarr.Api.V1.Artist
         public List<int> Tags { get; set; }
         public ApplyTags ApplyTags { get; set; }
         public bool MoveFiles { get; set; }
+        public bool DeleteFiles { get; set; }
     }
 
     public enum ApplyTags