Test status badges (#39)

* test report badges

* release version badge

README.md

@@ -1,6 +1,10 @@
 # RedPulsar
 
+[![Release](https://img.shields.io/github/release/himadieievsv/redpulsar.svg?sort=semver&color=blue)](https://github.com/himadieievsv/redpulsar/releases/latest)
+![Unit Tests](https://github.com/himadieievsv/redpulsar/actions/workflows/unit-tests.yml/badge.svg)
+![Integration Tests](https://github.com/himadieievsv/redpulsar/actions/workflows/integration-tests.yml/badge.svg)
 [![Apache 2.0 licensed](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](./LICENSE)
+[![codecov](https://codecov.io/gh/himadieievsv/redpulsar/graph/badge.svg?token=ME7ESPRABQ)](https://codecov.io/gh/himadieievsv/redpulsar)
 
 ## What is RedPulsar?
 RedPulsar provides Distributed Locks with Redis and other utilities for cloud computing or different kinds of distributed systems.