update default image providers

MediaBrowser.Controller/Providers/IImageFileSaver.cs

@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Model.Drawing;
+using MediaBrowser.Model.Entities;
+
+namespace MediaBrowser.Controller.Providers
+{
+    public interface IImageFileSaver : IImageSaver
+    {
+        /// <summary>
+        /// Gets the save paths.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="type">The type.</param>
+        /// <param name="format">The format.</param>
+        /// <param name="index">The index.</param>
+        /// <returns>IEnumerable{System.String}.</returns>
+        IEnumerable<string> GetSavePaths(IHasImages item, ImageType type, ImageFormat format, int index);
+    }
+}