ci: configure monorepo sonarcloud (#13944)

errors/sonar-project.properties

@@ -0,0 +1,15 @@
+sonar.projectKey=cosmos-sdk-errors
+sonar.organization=cosmos
+
+sonar.projectName=Cosmos SDK Errors
+sonar.project.monorepo.enabled=true
+
+sonar.sources=.
+sonar.exclusions=**/*_test.go
+sonar.tests=.
+sonar.test.inclusions=**/*_test.go
+sonar.go.coverage.reportPaths=coverage.out
+
+sonar.sourceEncoding=UTF-8
+sonar.scm.provider=git
+sonar.pullrequest.github.summary_comment=true