chore(archive): added archive notice to readme

Author: Justin Wilaby

README.md

@@ -1,3 +1,21 @@
+## Archival Notice
+
+📁🗄📜**Repository Archived**
+
+This repository has been archived and will no longer be maintained by Heroku.
+
+**What this means:**
+- Pull requests and issue tracking have been disabled.
+- The project will not receive updates and no new features or security updates will be released.
+- The repository is now read-only.
+- The plugin will still be available to use but may be deprecated.
+
+**Why was it archived?**
+This project is considered complete and active development has concluded.
+
+**What if I need to make a change?**
+If you wish to continue development, please consider forking the repository and maintaining your own version.
+
 # Heroku CLI TypeScript API Schema
 
 <!-- toc -->