implement PreventDefault function for stop quiting application

ElectronNET.API/QuitEventArgs.cs

@@ -0,0 +1,16 @@
+namespace ElectronNET.API
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public sealed class QuitEventArgs
+    {
+        /// <summary>
+        /// Will prevent the default behaviour, which is terminating the application.
+        /// </summary>
+        public void PreventDefault()
+        {
+            Electron.App.PreventQuit();
+        }
+    }
+}