Add GPL modules

MediaBrowser.Controller/Library/IIntroProvider.cs

@@ -0,0 +1,32 @@
+using MediaBrowser.Controller.Entities;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Controller.Library
+{
+    /// <summary>
+    /// Class BaseIntroProvider
+    /// </summary>
+    public interface IIntroProvider
+    {
+        /// <summary>
+        /// Gets the intros.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="user">The user.</param>
+        /// <returns>IEnumerable{System.String}.</returns>
+        Task<IEnumerable<IntroInfo>> GetIntros(BaseItem item, User user);
+
+        /// <summary>
+        /// Gets all intro files.
+        /// </summary>
+        /// <returns>IEnumerable{System.String}.</returns>
+        IEnumerable<string> GetAllIntroFiles();
+
+        /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        string Name { get; }
+    }
+}