public IActionResult CreateMonster([FromBody] MonsterCreationDto dto, [FromRoute] int gameId)
 {
     try
     {
         var monster = repo.CreateMonster(dto, gameId);
         return(StatusCode(201, response.CreateMonsterResponse(monster)));
     }
     catch (Exception)
     {
         return(StatusCode(500, ErrorResponse.ServerError));
     }
 }