Added superclass structure to roads and settlement

.idea/misc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_16" project-jdk-name="openjdk-17" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="openjdk-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>

src/ch/zhaw/catan/Settlement.java

@@ -1,6 +1,6 @@
 package ch.zhaw.catan;
 
-public class Settlement {
+public class Settlement extends Structure {
 
     public Settlement(Config.Faction faction) {
         super(faction);