Rename frontend to legacy-frontend

legacy-frontend/pages/index.js

@@ -0,0 +1,9 @@
+import Page, { getStaticProps as gsp } from '~/pages/[slug]'
+
+export const getStaticProps = async () => {
+  return gsp({ params: { slug: 'home' } })
+}
+
+export default function Home(props) {
+  return <Page {...props} />
+}