添加应用退出功能，支持通过长按触摸事件触发退出

src/electron.d.ts

@@ -28,6 +28,7 @@ interface ElectronAPI {
   log: (level: string, message: any) => void;
   removeIdCardListeners: () => void;
   restartApp: () => void;
+  quitApp: () => void;
 }
 
 interface Window {