**Description**

Currently when `ECSOperator` is run, the logs of the ECS task are fetched only when the task is done. That's not so convenient, especially when the task takes some good amount of time. In order to understand what's happening with the task, I need to go to Cloudwatch and search for the tasks logs. It would be good to have some parallel process that could fetch ECS task logs from Cloudwatch and make them visible in a realtime. 

**Are you willing to submit a PR?**

I can try, but I need to be guided.

airflow/providers/amazon/aws/operators/ecs.py
if not self.client or not self.arn:
            return
        waiter = self.client.get_waiter('tasks_stopped')
        waiter.config.max_attempts = sys.maxsize  
        waiter.wait(cluster=self.cluster, tasks=[self.arn])
        return
    def _cloudwatch_log_events(self) -> Generator:
        if self._aws_logs_enabled():
            task_id = self.arn.split("/")[-1]
            stream_name = f"{self.awslogs_stream_prefix}/{task_id}"
            yield from self.get_logs_hook().get_log_events(self.awslogs_group, stream_name)
        else:
            yield from ()
    def _aws_logs_enabled(self):
        return self.awslogs_group and self.awslogs_stream_prefix
    def _last_log_messages(self, number_messages):
        return [log["message"] for log in deque(self._cloudwatch_log_events(), maxlen=number_messages)]
    def _last_log_message(self):