add badges in README

README.md

@@ -1,5 +1,9 @@
 # BGG-API
 
+![build status](https://github.com/tnaskali/bgg-api/actions/workflows/build-image.yml/badge.svg)
+![build status](https://github.com/tnaskali/bgg-api/actions/workflows/build-native-image.yml/badge.svg)
+[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=tnaskali_bgg-api&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=tnaskali_bgg-api)
+
 Spring Boot application acting as a proxy to
 BoardGameGeek's [XML API](https://boardgamegeek.com/wiki/page/BGG_XML_API), [XML API 2](https://boardgamegeek.com/wiki/page/BGG_XML_API2),
 as well as their undocumented Json API. Its purpose is to expose the same functionalities, mainly retrieving but also