add general ai

app/src/main/java/chess/controller/event/EmptyGameDispatcher.java

@@ -43,7 +43,7 @@ public class EmptyGameDispatcher extends GameDispatcher {
 	}
 
 	@Override
-	public void onPlayerTurn(Color color) {
+	public void onPlayerTurn(Color color, boolean undone) {
 	}
 
 	@Override

app/src/main/java/chess/controller/event/GameAdaptator.java

@@ -7,7 +7,7 @@ import chess.model.Move;
 public abstract class GameAdaptator implements GameListener {
 
 	@Override
-	public void onPlayerTurn(Color color) {}
+	public void onPlayerTurn(Color color, boolean undone) {}
 
 	@Override
 	public void onWin(Color color) {}

app/src/main/java/chess/controller/event/GameDispatcher.java

@@ -29,8 +29,8 @@ public class GameDispatcher implements GameListener {
 	}
 
 	@Override
-	public void onPlayerTurn(Color color) {
-		asyncForEachCall((l) -> l.onPlayerTurn(color));
+	public void onPlayerTurn(Color color, boolean undone) {
+		asyncForEachCall((l) -> l.onPlayerTurn(color, undone));
 	}
 
 	@Override

app/src/main/java/chess/controller/event/GameListener.java

@@ -56,8 +56,9 @@ public interface GameListener {
 	/**
 	 * Invoked when it's the player turn
 	 * @param color the color of the player who should play
+	 * @param undone true if it's a result of an undo command
 	 */
-	void onPlayerTurn(Color color);
+	void onPlayerTurn(Color color, boolean undone);
 	
 	/**
 	 * Invoked when a pawn should be promoted