### 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)

airflow/cli/cli_parser.py
name='kerberos',
        help="Start a kerberos ticket renewer",
        func=lazy_load_command('airflow.cli.commands.kerberos_command.kerberos'),
        args=(ARG_PRINCIPAL, ARG_KEYTAB, ARG_PID, ARG_DAEMON, ARG_STDOUT, ARG_STDERR, ARG_LOG_FILE),
    ),
    ActionCommand(
        name='webserver',
        help="Start a Airflow webserver instance",
        func=lazy_load_command('airflow.cli.commands.webserver_command.webserver'),
        args=(
            ARG_PORT,
            ARG_WORKERS,
            ARG_WORKERCLASS,
            ARG_WORKER_TIMEOUT,
            ARG_HOSTNAME,
            ARG_PID,
            ARG_DAEMON,
            ARG_STDOUT,
            ARG_STDERR,
            ARG_ACCESS_LOGFILE,
            ARG_ERROR_LOGFILE,
            ARG_ACCESS_LOGFORMAT,
            ARG_LOG_FILE,
            ARG_SSL_CERT,
            ARG_SSL_KEY,
            ARG_DEBUG,
        ),
    ),
    ActionCommand(
        name='scheduler',