Set default timeout to one minute

core/src/main/java/nl/tudelft/ewi/auta/core/model/Assignment.java

 package nl.tudelft.ewi.auta.core.model;
 
+import java.time.Duration;
+import java.time.temporal.ChronoUnit;
 import java.util.HashSet;
 import java.util.Objects;
 import java.util.Set;
@@ -85,7 +87,7 @@ public class Assignment {
     /**
      * The worker timeout in number of seconds.
      */
-    private Integer timeout = 0;
+    private int timeout = (int) Duration.of(10, ChronoUnit.MINUTES).getSeconds();
 
     /**
      * Create a new assignment object.
@@ -152,7 +154,7 @@ public class Assignment {
      * Returns the worker timeout.
      * @return the worker timeout in seconds.
      */
-    public Integer getTimeout() {
+    public int getTimeout() {
         return this.timeout;
     }
 
@@ -160,7 +162,7 @@ public class Assignment {
      * Returns the worker timeout.
      * @param timeout the worker timeout in seconds.
      */
-    public void setTimeout(final Integer timeout) {
+    public void setTimeout(final int timeout) {
         this.timeout = timeout;
     }