Feat: app.js -> tsx로 변경

Author: gitgitWi

pages/_app.js

@@ -0,0 +1,13 @@
+import { FunctionComponent } from "react";
+import "../styles/globals.css";
+
+interface MyAppProps {
+  Component: FunctionComponent;
+  pageProps: any;
+}
+
+function MyApp({ Component, pageProps }: MyAppProps) {
+  return <Component {...pageProps} />;
+}
+
+export default MyApp;