update html and and make use of template for pages

main.js

@@ -1,9 +1,13 @@
 const { app, BrowserWindow } = require('electron/main')
+const path = require('node:path')
 
 const createWindow = () => {
   const win = new BrowserWindow({
     width: 1280,
-    height: 720
+    height: 720,
+    webPreferences: {
+      preload: path.join(__dirname, 'preload.js')
+    }
   })
 
   win.loadFile('renderer/index.html')