Implement HostHook logic to CLI and API. Implement an example in the Web-App.

ElectronNET.WebApp/Controllers/HostHookController.cs

@@ -0,0 +1,34 @@
+using ElectronNET.API;
+using ElectronNET.API.Entities;
+using Microsoft.AspNetCore.Mvc;
+using System.Linq;
+
+namespace ElectronNET.WebApp.Controllers
+{
+    public class HostHookController : Controller
+    {
+        public IActionResult Index()
+        {
+            if (HybridSupport.IsElectronActive)
+            {
+                Electron.IpcMain.On("start-hoosthook", async (args) =>
+                {
+                    var mainWindow = Electron.WindowManager.BrowserWindows.First();
+                    var options = new OpenDialogOptions
+                    {
+                        Properties = new OpenDialogProperty[] 
+                        {
+                            OpenDialogProperty.openDirectory
+                        }
+                    };
+                    var folderPath = await Electron.Dialog.ShowOpenDialogAsync(mainWindow, options);
+
+                    var resultFromTypeScript = await Electron.HostHook.CallAsync<string>("create-excel-file", folderPath);
+                    Electron.IpcMain.Send(mainWindow, "excel-file-created", resultFromTypeScript);
+                });
+            }
+
+            return View();
+        }
+    }
+}