main: add context bridge communication example via preload script, set nodeIntegration to false by default, improve security

src/main/IPCs.ts

@@ -0,0 +1,14 @@
+import { BrowserWindow, ipcMain } from 'electron'
+import Constants from './utils/Constants'
+
+/*
+ * IPC Communications
+ * */
+export default class IPCs {
+  static initialize(window: BrowserWindow) {
+    // Get application version
+    ipcMain.on('msgRequestGetVersion', () => {
+      window.webContents.send('msgReceivedVersion', Constants.APP_VERSION)
+    })
+  }
+}