### Description

Airflow provides the Amazon DynamoDB to Amazon S3 below.  
https://airflow.apache.org/docs/apache-airflow-providers-amazon/stable/operators/transfer/dynamodb_to_s3.html

Most of Data Engineer build their "export DDB data to s3" pipeline using "within the point in time recovery window".   
https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/dynamodb.html#DynamoDB.Client.export_table_to_point_in_time

I appreciate if airflow has this function as a native function.  

### Use case/motivation

My daily batch job exports its data with pitr option. All of tasks is written by apache-airflow-providers-amazon except "export_table_to_point_in_time" task. 
"export_table_to_point_in_time" task only used the python operator. I expect I can unify the task as apache-airflow-providers-amazon library. 

### Related issues

_No response_

### Are you willing to submit a PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

responses = [
            {
                "Items": [{"a": 1}, {"b": 2}],
                "LastEvaluatedKey": "123",
            },
            {
                "Items": [{"c": 3}],
            },
        ]
        table = MagicMock()
        table.return_value.scan.side_effect = responses
        mock_aws_dynamodb_hook.return_value.get_conn.return_value.Table = table
        s3_client = MagicMock()
        s3_client.return_value.upload_file = self.mock_upload_file
        mock_s3_hook.return_value.get_conn = s3_client
        dynamodb_to_s3_operator = DynamoDBToS3Operator(
            task_id="dynamodb_to_s3",
            dynamodb_table_name="airflow_rocks",
            s3_bucket_name="airflow-bucket",
            file_size=4000,
        )
        dynamodb_to_s3_operator.execute(context={})
        aws_conn_id = "aws_default"
        mock_s3_hook.assert_called_with(aws_conn_id=aws_conn_id)
        mock_aws_dynamodb_hook.assert_called_with(aws_conn_id=aws_conn_id)
    @patch("airflow.providers.amazon.aws.transfers.dynamodb_to_s3.S3Hook")
    @patch("airflow.providers.amazon.aws.transfers.dynamodb_to_s3.DynamoDBHook")
    def test_dynamodb_to_s3_with_aws_conn_id(self, mock_aws_dynamodb_hook, mock_s3_hook):