타이틀바를 일반적인 맥 디자인에 맞게 수정

src/main/index.js

@@ -25,6 +25,13 @@ function createWindow() {
   mainWindow.once('ready-to-show', () => {
     mainWindow.show();
   });
+
+  mainWindow.on('enter-full-screen', () => {
+    mainWindow.webContents.send('fullscreen-change', true);
+  });
+  mainWindow.on('leave-full-screen', () => {
+    mainWindow.webContents.send('fullscreen-change', false);
+  });
 }
 
 app.whenReady().then(() => {