Increase init capacity

dmn-verifier-app/src/main/java/de/unikoblenz/fgbks/dmn/core/models/VerificationResult.java

@@ -23,7 +23,7 @@ public class VerificationResult implements Serializable {
 
   protected VerificationResult() {
     super();
-    rules = new ArrayList<>();
+    rules = new ArrayList<>(13);
   }
 
   @XmlElement(name = "ruleCount")