ci: add initial SonarQube configuration for code analysis

Author: obarbosa89

sonar-project.properties

@@ -0,0 +1,9 @@
+sonar.projectKey=phenixphp_sqlite
+sonar.organization=phenixphp
+sonar.sources=src
+sonar.tests=tests
+sonar.php.coverage.reportPaths=build/logs/clover.xml
+sonar.php.tests.reportPath=build/report.junit.xml
+sonar.exclusions=vendor/**, .vscode/**
+sonar.links.ci=https://github.com/phenixphp/sqlite/actions
+sonar.links.issue=https://github.com/phenixphp/sqlite/issues