Set exit status according to check results

Author: per1234

main.go

@@ -40,5 +40,7 @@ func main() {
 		fmt.Println(result.JSONReport())
 	}
 
-	// TODO: set exit status according to check results
+	if !result.Passed() {
+		os.Exit(errorcodes.ErrGeneric)
+	}
 }

result/result.go

@@ -207,6 +207,11 @@ func jsonReportRaw() []byte {
 	return reportJSON
 }
 
+// Passed returns whether the checks passed cumulatively.
+func Passed() bool {
+	return report.Summary.Pass
+}
+
 func getProjectReportIndex(projectPath *paths.Path) (bool, int) {
 	var index int
 	var projectReport projectReportType