chore: mark as deprecated

Author: kkoomen

README.md

@@ -1,4 +1,8 @@
-# NestJS Throttler Redis Storage
+# NestJS Throttler Redis Storage (DEPRECATED)
+
+:warning: **The original package will be further maintained by @jmcdo29, see [here](https://github.com/jmcdo29/nest-lab/tree/main/packages/throttler-storage-redis), as this repository will not be maintained anymore for future development.**
+
+---
 
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