Add Artifact Hub and OpenSSF badges (#1682)

Author: julianocosta89

README.md

@@ -7,6 +7,8 @@
 [![Downloads](https://img.shields.io/docker/pulls/otel/demo)](https://hub.docker.com/r/otel/demo)
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg?color=red)](https://github.com/open-telemetry/opentelemetry-demo/blob/main/LICENSE)
 [![Integration Tests](https://github.com/open-telemetry/opentelemetry-demo/actions/workflows/run-integration-tests.yml/badge.svg)](https://github.com/open-telemetry/opentelemetry-demo/actions/workflows/run-integration-tests.yml)
+[![Artifact Hub](https://img.shields.io/endpoint?url=https://artifacthub.io/badge/repository/opentelemetry-demo)](https://artifacthub.io/packages/helm/opentelemetry-helm/opentelemetry-demo)
+[![OpenSSF Best Practices](https://www.bestpractices.dev/projects/9247/badge)](https://www.bestpractices.dev/en/projects/9247)
 
 ## Welcome to the OpenTelemetry Astronomy Shop Demo