refactor(docitemfooter): use new DocItem Footer

Author: MichaelSolati

src/theme/DocItemFooter/Feedback/index.js renamed to src/theme/DocItem/Footer/Feedback/index.js

@@ -0,0 +1,12 @@
+import React from 'react';
+import Footer from '@theme-original/DocItem/Footer';
+import Feedback from './Feedback';
+
+export default function FooterWrapper(props) {
+  return (
+    <>
+      <Footer {...props} />
+      <Feedback {...props}></Feedback>
+    </>
+  );
+}