chore: Add banner to readme

README.md

@@ -6,6 +6,9 @@ An open-source headless commerce platform built on [Node.js](https://nodejs.org)
 ![Publish & Install](https://github.com/vendure-ecommerce/vendure/workflows/Publish%20&%20Install/badge.svg)
 [![lerna](https://img.shields.io/badge/maintained%20with-lerna-cc00ff.svg)](https://lernajs.io/)
 
+![vendure_github_banner (1)](https://github.com/vendure-ecommerce/vendure/assets/6275952/0e25b1c7-a648-44a1-ba00-60012f0e7aaa)
+
+
 ### [www.vendure.io](https://www.vendure.io/)
 
 * [Getting Started](https://docs.vendure.io/getting-started/): Get Vendure up and running locally in a matter of minutes with a single command