added image by name api methods

MediaBrowser.Controller/IServerApplicationPaths.cs

@@ -70,6 +70,12 @@ namespace MediaBrowser.Controller
         /// <value>The ratings path.</value>
         string RatingsPath { get; }
 
+        /// <summary>
+        /// Gets the media info images path.
+        /// </summary>
+        /// <value>The media info images path.</value>
+        string MediaInfoImagesPath { get; }
+        
         /// <summary>
         /// Gets the path to the user configuration directory
         /// </summary>

MediaBrowser.Controller/Providers/Music/FanArtArtistProvider.cs

@@ -1,6 +1,7 @@
 using MediaBrowser.Common.Net;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Logging;
 using MediaBrowser.Model.Net;
@@ -49,7 +50,7 @@ namespace MediaBrowser.Controller.Providers.Music
         /// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
         public override bool Supports(BaseItem item)
         {
-            return false;
+            return item is MusicArtist;
         }
 
         protected virtual bool SaveLocalMeta

MediaBrowser.Controller/Providers/Music/LastfmArtistProvider.cs

@@ -90,7 +90,7 @@ namespace MediaBrowser.Controller.Providers.Music
 
         public override bool Supports(BaseItem item)
         {
-            return false;
+            return item is MusicArtist;
         }
     }
 }