Pooja/feedback (#80)

* Add feedback widget with gtag event

* Add index file that I forgot :)

Author: PoojaB26

src/theme/DocItem/Footer/index.js

@@ -0,0 +1,56 @@
+import React from 'react';
+import clsx from 'clsx';
+import {ThemeClassNames} from '@docusaurus/theme-common';
+import {useDoc} from '@docusaurus/theme-common/internal';
+import TagsListInline from '@theme/TagsListInline';
+import EditMetaRow from '@theme/EditMetaRow';
+import Feedback from '../../../components/Feedback/index.js';
+
+export default function DocItemFooter() {
+    const {metadata} = useDoc();
+    const {
+        editUrl,
+        lastUpdatedAt,
+        formattedLastUpdatedAt,
+        lastUpdatedBy,
+        tags,
+        unversionedId,
+    } = metadata;
+    const canDisplayTagsRow = tags.length > 0;
+    const canDisplayEditMetaRow = !!(editUrl || lastUpdatedAt || lastUpdatedBy);
+    const canDisplayFooter = canDisplayTagsRow || canDisplayEditMetaRow;
+
+    if (!canDisplayFooter) {
+        return null;
+    }
+    return (
+
+        <footer
+            className={clsx(ThemeClassNames.docs.docFooter, 'docusaurus-mt-lg')}>
+            <Feedback resource={unversionedId} />
+            {canDisplayTagsRow && (
+
+                <div
+                    className={clsx(
+                        'row margin-top--sm',
+                        ThemeClassNames.docs.docFooterTagsRow,
+                    )}>
+                    <div className="col">
+                        <TagsListInline tags={tags}/>
+                    </div>
+                </div>
+            )}
+            {canDisplayEditMetaRow && (
+                <EditMetaRow
+                    className={clsx(
+                        'margin-top--sm',
+                        ThemeClassNames.docs.docFooterEditMetaRow,
+                    )}
+                    editUrl={editUrl}
+                    lastUpdatedAt={lastUpdatedAt}
+                    lastUpdatedBy={lastUpdatedBy}
+                />
+            )}
+        </footer>
+    );
+}