feat: Add repo activity stats to README.md (#27372)

README.md

@@ -201,5 +201,15 @@ Understanding the Superset Points of View
 
 - [Superset API](https://superset.apache.org/docs/rest-api)
 
+## Repo Activity
+<a href="https://next.ossinsight.io/widgets/official/compose-last-28-days-stats?repo_id=39464018" target="_blank" style="display: block" align="center">
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="https://next.ossinsight.io/widgets/official/compose-last-28-days-stats/thumbnail.png?repo_id=39464018&image_size=auto&color_scheme=dark" width="655" height="auto">
+    <img alt="Performance Stats of apache/superset - Last 28 days" src="https://next.ossinsight.io/widgets/official/compose-last-28-days-stats/thumbnail.png?repo_id=39464018&image_size=auto&color_scheme=light" width="655" height="auto">
+  </picture>
+</a>
+
+<!-- Made with [OSS Insight](https://ossinsight.io/) -->
+
 <!-- telemetry/analytics pixel: -->
 <img referrerpolicy="no-referrer-when-downgrade" src="https://static.scarf.sh/a.png?x-pxid=bc1c90cd-bc04-4e11-8c7b-289fb2839492" />