Add banner to readme

Author: mayank1513

README.md

@@ -1,5 +1,7 @@
 # Git Json Resolver <img src="https://raw.githubusercontent.com/mayank1513/mayank1513/main/popper.png" style="height: 40px"/>
 
+![Git JSON Resolver Banner](./banner.jpg)
+
 [![test](https://github.com/react18-tools/git-json-resolver/actions/workflows/test.yml/badge.svg)](https://github.com/react18-tools/git-json-resolver/actions/workflows/test.yml)
 [![Maintainability](https://qlty.sh/gh/react18-tools/projects/git-json-resolver/maintainability.svg)](https://qlty.sh/gh/react18-tools/projects/git-json-resolver)
 [![codecov](https://codecov.io/gh/react18-tools/git-json-resolver/graph/badge.svg)](https://codecov.io/gh/react18-tools/git-json-resolver)