ElectronNET.API: Move API code to subfolder

src/ElectronNET.API/API/Entities/NotificationAction.cs

@@ -0,0 +1,18 @@
+namespace ElectronNET.API.Entities
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public class NotificationAction
+    {
+        /// <summary>
+        /// The label for the given action.
+        /// </summary>
+        public string Text { get; set; }
+
+        /// <summary>
+        /// The type of action, can be button.
+        /// </summary>
+        public string Type { get; set; }
+    }
+}