feat: add app chooser

app/src/main/java/chess/view/GameView.java

@@ -0,0 +1,21 @@
+package chess.view;
+
+import chess.ai.AI;
+import chess.controller.CommandSender;
+import chess.controller.event.GameAdapter;
+import chess.controller.event.GameListener;
+import chess.model.Color;
+
+public abstract class GameView extends GameAdapter implements CommandSender{
+	public abstract void run();
+
+	public boolean hasAIAttached(Color color) {
+		for (GameListener listener : getCommandExecutor().getListeners()) {
+			if (listener instanceof AI ai) {
+				if (ai.getColor() == color)
+					return true;
+			}
+		}
+		return false;
+	}
+}