Cleanup external item data cleanup (#14072)

MediaBrowser.Controller/IO/IExternalDataManager.cs

@@ -0,0 +1,19 @@
+using System.Threading;
+using System.Threading.Tasks;
+using MediaBrowser.Controller.Entities;
+
+namespace MediaBrowser.Controller.IO;
+
+/// <summary>
+/// Interface IPathManager.
+/// </summary>
+public interface IExternalDataManager
+{
+    /// <summary>
+    /// Deletes all external item data.
+    /// </summary>
+    /// <param name="item">The item.</param>
+    /// <param name="cancellationToken">The cancellation token.</param>
+    /// <returns>Task.</returns>
+    Task DeleteExternalItemDataAsync(BaseItem item, CancellationToken cancellationToken);
+}