message: docs(readme): add quality gate badge from sonarcloud
diff: <div align="center">
  -[![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/CRON%20Job/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/Complex%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/Simple%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/Mongo%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/TypeORM%20GraphQL%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/TypeORM%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/WebSocket%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions)[![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/RxJS%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions)
  +[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=jmcdo29_testing-nestjs&metric=alert_status)](https://sonarcloud.io/dashboard?id=jmcdo29_testing-nestjs)[![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/CRON%20Job/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/Complex%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/Simple%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/Mongo%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/TypeORM%20GraphQL%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/TypeORM%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions) [![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/WebSocket%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions)[![Actions Status](https://github.com/jmcdo29/testing-nestjs/workflows/RxJS%20Sample/badge.svg)](https://github.com/jmcdo29/testing-nestjs/actions)
  </div>
  