Add about window

src/MenuTemplate.ts

@@ -1,11 +1,22 @@
 import { Menu, app, BrowserWindow, webContents } from 'electron'
+import openAboutWindow from 'about-window'
+import * as path from 'path'
 
 const applicationMenu = {
   label: 'Application',
   submenu: [
     {
       label: 'About Application',
-      selector: 'orderFrontStandardAboutPanel:',
+      click: () => {
+        console.log(path.join(__dirname, 'icon.png'))
+        openAboutWindow({
+          icon_path: path.join(__dirname, 'icon.png'),
+          license: 'AGPL-3.0',
+          homepage: 'https://thomasnordquist.github.io/MQTT-Explorer/',
+          bug_report_url: 'https://github.com/thomasnordquist/MQTT-Explorer/issues',
+          description: 'Author: Thomas Nordquist',
+        })
+      },
     },
     {
       type: 'separator' as 'separator',