### Description

Recently, we added [a new DAG dependencies view](https://github.com/apache/airflow/pull/13199) to the webserver. It would be helpful if a similar diagram could also be displayed/generated using the CLI. For now, only [one DAG can be displayed](http://airflow.apache.org/docs/apache-airflow/stable/usage-cli.html#exporting-dag-structure-as-an-image) using CLI.
![image](https://user-images.githubusercontent.com/12058428/137945580-6a33f919-2648-4980-bd2c-b40cfcacc9fe.png)

If anyone is interested, I will be happy to help with the review.

### Use case/motivation

* Keep parity between CLI and web serwer.
* Enable the writing of scripts that use these diagrams, e.g. for attaching in the documentation.

### Related issues

https://github.com/apache/airflow/pull/13199/files

### Are you willing to submit a PR?

- [ ] 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)

tests/cli/commands/test_dag_command.py
"None",
            "None",
        ]
        for i, dag_id in enumerate(dag_ids):
            dag = self.dagbag.dags[dag_id]
            
            dag.create_dagrun(
                run_type=DagRunType.SCHEDULED,
                execution_date=now,
                start_date=now,
                state=State.FAILED,
            )
            
            args = self.parser.parse_args(['dags', 'next-execution', dag_id])
            with contextlib.redirect_stdout(io.StringIO()) as temp_stdout:
                dag_command.dag_next_execution(args)
                out = temp_stdout.getvalue()
            assert expected_output[i] in out
            
            args = self.parser.parse_args(['dags', 'next-execution', dag_id, '--num-executions', '2'])
            with contextlib.redirect_stdout(io.StringIO()) as temp_stdout:
                dag_command.dag_next_execution(args)
                out = temp_stdout.getvalue()
            assert expected_output_2[i] in out
        
        with create_session() as session:
            dr = session.query(DagRun).filter(DagRun.dag_id.in_(dag_ids))
            dr.delete(synchronize_session=False)
    @conf_vars({('core', 'load_examples'): 'true'})
    def test_cli_report(self):