Add CodeRabbit Pull Request Reviews badge to README

Author: ronibhakta1

README.md

@@ -5,6 +5,7 @@
 [![PyPI version](https://img.shields.io/pypi/v/zon-format.svg)](https://pypi.org/project/zon-format/)
 [![Python](https://img.shields.io/badge/python-3.8+-blue.svg)](https://www.python.org/downloads/)
 [![Tests](https://img.shields.io/badge/tests-220%2F220%20passing-brightgreen.svg)](#quality--testing)
+![CodeRabbit Pull Request Reviews](https://img.shields.io/coderabbit/prs/github/ZON-Format/ZON?utm_source=oss&utm_medium=github&utm_campaign=ZON-Format%2FZON&labelColor=171717&color=FF570A&link=https%3A%2F%2Fcoderabbit.ai&label=CodeRabbit+Reviews)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE)
 
 # ZON → JSON is dead. TOON was cute. ZON just won. (Now in Python v1.1.0)