implement Demo App sections: Dialogs, Menu, Tray, Shell, CrashHang, Notification, Shortcuts etc. Fix some API bugs and implement GlobalShortcut-, Shell- and WebContents-API.

ElectronNET.WebApp/Controllers/ShellController.cs

@@ -0,0 +1,27 @@
+using ElectronNET.API;
+using ElectronNET.API.Entities;
+using Microsoft.AspNetCore.Mvc;
+
+namespace ElectronNET.WebApp.Controllers
+{
+    public class ShellController : Controller
+    {
+        public IActionResult Index()
+        {
+            Electron.IpcMain.On("open-file-manager", async (args) => {
+
+                string path = await Electron.App.GetPathAsync(PathName.home);
+                await Electron.Shell.ShowItemInFolderAsync(path);
+
+            });
+
+            Electron.IpcMain.On("open-ex-links", async (args) => {
+
+                await Electron.Shell.OpenExternalAsync("https://github.com/ElectronNET");
+
+            });
+
+            return View();
+        }
+    }
+}