feat: add ai castling (Fixes #4)

app/src/main/java/chess/ai/actions/AIAction.java

@@ -0,0 +1,33 @@
+package chess.ai.actions;
+
+import chess.controller.Command;
+import chess.controller.CommandExecutor;
+import chess.controller.Command.CommandResult;
+import chess.controller.commands.UndoCommand;
+
+public abstract class AIAction {
+
+	private final CommandExecutor commandExecutor;
+
+	public AIAction(CommandExecutor commandExecutor) {
+		this.commandExecutor = commandExecutor;
+	}
+
+	protected CommandResult sendCommand(Command cmd, CommandExecutor commandExecutor) {
+		return commandExecutor.executeCommand(cmd);
+	}
+
+	public void undoAction(CommandExecutor commandExecutor) {
+		sendCommand(new UndoCommand(), commandExecutor);
+	}
+
+	public void undoAction() {
+		undoAction(this.commandExecutor);
+	}
+
+	public void applyAction() {
+		applyAction(this.commandExecutor);
+	}
+
+	public abstract void applyAction(CommandExecutor commandExecutor);
+}