add initial files

src/__tests__/App.test.tsx

@@ -0,0 +1,10 @@
+import '@testing-library/jest-dom';
+// import { render } from '@testing-library/react';
+// import { App } from 'renderer/app';
+
+describe('App', () => {
+  // eslint-disable-next-line jest/no-commented-out-tests
+  // it('should render', () => {
+  //   expect(render(<App />)).toBeTruthy();
+  // });
+});