feat: pgn parser

app/src/main/java/chess/controller/CommandExecutor.java

@@ -1,5 +1,7 @@
 package chess.controller;
 
+import java.util.List;
+
 import chess.controller.Command.CommandResult;
 import chess.controller.commands.UndoCommand;
 import chess.controller.event.AsyncGameDispatcher;
@@ -42,6 +44,13 @@ public class CommandExecutor {
 		return result;
 	}
 
+	public void executeCommands(List<? extends Command> commands) {
+		for (Command command : commands) {
+			CommandResult result = executeCommand(command);
+			assert result != CommandResult.NotAllowed;
+		}
+	}
+
 	private void processResult(Command command, CommandResult result) {
 		switch (result) {
 			case NotAllowed: