update default image providers

MediaBrowser.Controller/Providers/IRemoteSearchProvider.cs

@@ -0,0 +1,17 @@
+using System.Threading;
+using System.Threading.Tasks;
+using MediaBrowser.Common.Net;
+
+namespace MediaBrowser.Controller.Providers
+{
+    public interface IRemoteSearchProvider : IMetadataProvider
+    {
+        /// <summary>
+        /// Gets the image response.
+        /// </summary>
+        /// <param name="url">The URL.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task{HttpResponseInfo}.</returns>
+        Task<HttpResponseInfo> GetImageResponse(string url, CancellationToken cancellationToken);
+    }
+}