Add GPL modules

MediaBrowser.Controller/Plugins/ILocalizablePlugin.cs

@@ -0,0 +1,20 @@
+using System.IO;
+using System.Reflection;
+
+namespace MediaBrowser.Controller.Plugins
+{
+    public interface ILocalizablePlugin
+    {
+        Stream GetDictionary(string culture);
+    }
+
+    public static class LocalizablePluginHelper
+    {
+        public static Stream GetDictionary(Assembly assembly, string manifestPrefix, string culture)
+        {
+            // Find all dictionaries using GetManifestResourceNames, start start with the prefix
+            // Return the one for the culture if exists, otherwise return the default
+            return null;
+        } 
+    }
+}