Add Qodana badge to README [skip ci]

README.md

@@ -3,6 +3,7 @@
 [![NuGet](https://img.shields.io/nuget/v/refitter?color=blue)](https://www.nuget.org/packages/refitter)
 [![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=christianhelle_refitter&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=christianhelle_refitter)
 [![codecov](https://codecov.io/gh/christianhelle/refitter/graph/badge.svg?token=242YT1N6T2)](https://codecov.io/gh/christianhelle/refitter)
+[![Qodana](https://github.com/christianhelle/refitter/actions/workflows/qodana.yml/badge.svg)](https://github.com/christianhelle/refitter/actions/workflows/qodana.yml)
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
 [![All Contributors](https://img.shields.io/badge/all_contributors-24-orange.svg?style=flat-square)](#contributors-)