chore: Added artifact hub badge (argoproj#10854)

Signed-off-by: Eddie Knight <[email protected]>

Signed-off-by: Eddie Knight <[email protected]>

README.md

@@ -1,4 +1,5 @@
 [![Integration tests](https://github.com/argoproj/argo-cd/workflows/Integration%20tests/badge.svg?branch=master)](https://github.com/argoproj/argo-cd/actions?query=workflow%3A%22Integration+tests%22) [![slack](https://img.shields.io/badge/slack-argoproj-brightgreen.svg?logo=slack)](https://argoproj.github.io/community/join-slack) [![codecov](https://codecov.io/gh/argoproj/argo-cd/branch/master/graph/badge.svg)](https://codecov.io/gh/argoproj/argo-cd) [![Release Version](https://img.shields.io/github/v/release/argoproj/argo-cd?label=argo-cd)](https://github.com/argoproj/argo-cd/releases/latest) [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/4486/badge)](https://bestpractices.coreinfrastructure.org/projects/4486) [![Twitter Follow](https://img.shields.io/twitter/follow/argoproj?style=social)](https://twitter.com/argoproj)
+[![Artifact HUB](https://img.shields.io/endpoint?url=https://artifacthub.io/badge/repository/argo-cd)](https://artifacthub.io/packages/helm/argo/argo-cd)
 
 # Argo CD - Declarative Continuous Delivery for Kubernetes