Add archive/deprecation notice (#556)

Author: sys-emf

README.md

@@ -1,5 +1,11 @@
 # Welcome to the Cluster API Provider for Intel
 
+
+> NOTE!
+> The Edge Manageability Framework has been deprecated and will no longer receive updates or active maintenance, including security fixes.  
+> Feature requests, bug reports, and pull requests will not be reviewed or responded to.  
+> Existing releases and documentation will remain available for reference only.
+
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/open-edge-platform/cluster-api-provider-intel/badge)](https://scorecard.dev/viewer/?uri=github.com/open-edge-platform/cluster-api-provider-intel)