Update README to reflect project status

Updated README to indicate project is no longer active and merged.

Author: gkorland

README.md

@@ -1,3 +1,7 @@
+> ⚠️ **This project is no longer active and has been merged into:**  
+> https://github.com/FalkorDB/code-graph
+---
+
 [![Try Free](https://img.shields.io/badge/Try%20Free-FalkorDB%20Cloud-FF8101?labelColor=FDE900&link=https://app.falkordb.cloud)](https://app.falkordb.cloud)
 [![Dockerhub](https://img.shields.io/docker/pulls/falkordb/falkordb?label=Docker)](https://hub.docker.com/r/falkordb/falkordb/)
 [![Discord](https://img.shields.io/discord/1146782921294884966?style=flat-square)](https://discord.com/invite/6M4QwDXn2w)