implemented shunting trains

src/main/java/de/srsoftware/web4rail/conditions/Condition.java

@@ -123,6 +123,7 @@ public abstract class Condition extends BaseClass {
 				PushPullTrain.class,
 				RouteEndBlock.class,
 				TrainHasTag.class,
+				TrainIsShunting.class,
 				TrainLength.class,
 				TrainSelect.class,
 				TrainSpeed.class,

src/main/java/de/srsoftware/web4rail/conditions/TrainIsShunting.java

@@ -0,0 +1,14 @@
+package de.srsoftware.web4rail.conditions;
+
+public class TrainIsShunting extends Condition {
+	
+	@Override
+	public boolean fulfilledBy(Context context) {
+		return context.train().isShunting() != inverted;
+	}
+
+	@Override
+	public String toString() {
+		return t(inverted ? "train is not shunting":"train is shunting") ;
+	}
+}