docs: add CozyDevKit (#2055)

Author: jdegand

README.md

@@ -1169,6 +1169,7 @@ Current Angular version: [![npm version](https://badge.fury.io/js/%40angular%2Fc
 
 * [Admin Mart](https://adminmart.com/templates/angular-dashboard/)
 * [Angular-Templates](https://angular-templates.io/)
+* [CozyDevKit](https://cozydevkit.com/) - Interactive tools, architecture patterns, cheat sheets, and DevOps services for Angular 21. 
 * [NgFast](https://ngfast.com/) - The Angular boilerplate for building SaaS, landing pages, and web apps fast—turning your ideas into income.
 * [Nzoni](https://nzoni.app/) - Launch your SAAS in days with Angular.
 * [Theme Forest](https://themeforest.net/search/angular)