Implement syncplay permissions for a user

MediaBrowser.Model/Configuration/SyncplayAccess.cs

@@ -0,0 +1,23 @@
+namespace MediaBrowser.Model.Configuration
+{
+    /// <summary>
+    /// Enum SyncplayAccess.
+    /// </summary>
+    public enum SyncplayAccess
+    {
+        /// <summary>
+        /// User can create groups and join them.
+        /// </summary>
+        CreateAndJoinGroups,
+
+        /// <summary>
+        /// User can only join already existing groups.
+        /// </summary>
+        JoinGroups,
+
+        /// <summary>
+        /// Syncplay is disabled for the user.
+        /// </summary>
+        None
+    }
+}

MediaBrowser.Model/Users/UserPolicy.cs

@@ -80,6 +80,12 @@ namespace MediaBrowser.Model.Users
         public string AuthenticationProviderId { get; set; }
         public string PasswordResetProviderId { get; set; }
 
+        /// <summary>
+        /// Gets or sets a value indicating what Syncplay features the user can access.
+        /// </summary>
+        /// <value>Access level to Syncplay features.</value>
+        public SyncplayAccess SyncplayAccess { get; set; }
+
         public UserPolicy()
         {
             IsHidden = true;
@@ -125,6 +131,7 @@ namespace MediaBrowser.Model.Users
             EnableContentDownloading = true;
             EnablePublicSharing = true;
             EnableRemoteAccess = true;
+            SyncplayAccess = SyncplayAccess.CreateAndJoinGroups;
         }
     }
 }