[DPE-3024] Add badges to README.md (#61)

.github/workflows/publish.yaml

@@ -1,3 +1,5 @@
+name: Publish
+
 on:
   workflow_call:
   workflow_dispatch:

README.md

@@ -1,5 +1,8 @@
 ## Introduction to Charmed Spark ROCK  (OCI Image)
 
+[![Container Registry](https://img.shields.io/badge/Container%20Registry-published-blue)](https://github.com/canonical/charmed-spark-rock/pkgs/container/charmed-spark)
+[![Release](https://github.com/canonical/charmed-spark-rock/actions/workflows/publish.yaml/badge.svg)](https://github.com/canonical/charmed-spark-rock/actions/workflows/publish.yaml)
+
 Charmed Spark is a set of Canonical supported artifacts (including charms, ROCK OCI images and SNAPs) that makes operating Spark workloads on Kubernetes seamless, secure and production-ready. 
 
 The solution helps to simplify user interaction with Spark applications and the underlying Kubernetes cluster whilst retaining the traditional semantics and command line tooling that users already know. Operators benefit from straightforward, automated deployment of Spark components (e.g. Spark History Server) to the Kubernetes cluster, using [Juju](https://juju.is/). 
@@ -89,4 +92,4 @@ Charmed Spark is free software, distributed under the [Apache Software License,
 
 ## Trademark Notice
 
-Apache®, Apache Spark, Spark®, and the Spark logo are either registered trademarks or trademarks of the Apache Software Foundation in the United States and/or other countries.
+Apache®, Apache Spark, Spark®, and the Spark logo are either registered trademarks or trademarks of the Apache Software Foundation in the United States and/or other countries.