Add GPL modules

MediaBrowser.Common/Security/ISecurityManager.cs

@@ -0,0 +1,32 @@
+using MediaBrowser.Model.Entities;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Common.Security
+{
+    public interface ISecurityManager
+    {
+        /// <summary>
+        /// Gets a value indicating whether this instance is MB supporter.
+        /// </summary>
+        /// <value><c>true</c> if this instance is MB supporter; otherwise, <c>false</c>.</value>
+        Task<bool> IsSupporter();
+
+        /// <summary>
+        /// Gets or sets the supporter key.
+        /// </summary>
+        /// <value>The supporter key.</value>
+        string SupporterKey { get; }
+
+        /// <summary>
+        /// Gets the registration status. Overload to support existing plug-ins.
+        /// </summary>
+        Task<MBRegistrationRecord> GetRegistrationStatus(string feature);
+
+        /// <summary>
+        /// Register and app store sale with our back-end
+        /// </summary>
+        /// <param name="parameters">Json parameters to pass to admin server</param>
+        Task RegisterAppStoreSale(string parameters);
+        Task UpdateSupporterKey(string newValue);
+    }
+}