chore: add badges for CI status, test coverage, and NPM version to README.md

Author: niranjan94

README.md

@@ -1,3 +1,7 @@
+[![Build and Test](https://github.com/mockingjay-io/react-display-name-plugin/actions/workflows/build-and-test.yml/badge.svg)](https://github.com/mockingjay-io/react-display-name-plugin/actions/workflows/build-and-test.yml)
+[![codecov](https://codecov.io/gh/mockingjay-io/react-display-name-plugin/graph/badge.svg?token=X8XYSPSGI4)](https://codecov.io/gh/mockingjay-io/react-display-name-plugin)
+[![NPM Version](https://img.shields.io/npm/v/react-display-name-plugin)](https://www.npmjs.com/package/react-display-name-plugin)
+
 ## Overview
 
 **react-display-name-plugin** is a build plugin for both Webpack and Vite that makes your custom