readme: add sonarcloud badges (#4)

README.md

@@ -1,8 +1,16 @@
 # DepGraph
 
-[![PkgGoDev](https://pkg.go.dev/badge/github.com/luno/depgraph)](https://pkg.go.dev/github.com/luno/depgraph)
 [![License](http://img.shields.io/badge/license-mit-blue.svg?style=flat-square)](https://github.com/luno/depgraph/blob/main/LICENSE)
+[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=luno_depgraph&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=luno_depgraph)
+[![Coverage](https://sonarcloud.io/api/project_badges/measure?project=luno_depgraph&metric=coverage)](https://sonarcloud.io/summary/new_code?id=luno_depgraph)
+[![Bugs](https://sonarcloud.io/api/project_badges/measure?project=luno_depgraph&metric=bugs)](https://sonarcloud.io/summary/new_code?id=luno_depgraph)
+[![Security Rating](https://sonarcloud.io/api/project_badges/measure?project=luno_depgraph&metric=security_rating)](https://sonarcloud.io/summary/new_code?id=luno_depgraph)
+[![Vulnerabilities](https://sonarcloud.io/api/project_badges/measure?project=luno_depgraph&metric=vulnerabilities)](https://sonarcloud.io/summary/new_code?id=luno_depgraph)
+[![Duplicated Lines (%)](https://sonarcloud.io/api/project_badges/measure?project=luno_depgraph&metric=duplicated_lines_density)](https://sonarcloud.io/summary/new_code?id=luno_depgraph)
 [![Go Report Card](https://goreportcard.com/badge/github.com/luno/depgraph)](https://goreportcard.com/report/github.com/luno/depgraph)
+[![GoDoc](https://godoc.org/github.com/luno/depgraph?status.png)](https://godoc.org/github.com/luno/depgraph)
+
+
 
 DepGraph is a package to figure out an efficient dependency tree for a Go package.