### 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
ARG_EMAIL,
            ARG_FIRSTNAME,
            ARG_LASTNAME,
            ARG_PASSWORD,
            ARG_USE_RANDOM_PASSWORD,
        ),
        epilog=(
            'examples:\n'
            'To create an user with "Admin" role and username equals to "admin", run:\n'
            '\n'
            '    $ airflow users create \\\n'
            '          --username admin \\\n'
            '          --firstname FIRST_NAME \\\n'
            '          --lastname LAST_NAME \\\n'
            '          --role Admin \\\n'
            '          --email admin@example.org'
        ),
    ),
    ActionCommand(
        name='delete',
        help='Delete a user',
        func=lazy_load_command('airflow.cli.commands.user_command.users_delete'),
        args=(ARG_USERNAME_OPTIONAL, ARG_EMAIL_OPTIONAL),
    ),
    ActionCommand(
        name='add-role',
        help='Add role to a user',
        func=lazy_load_command('airflow.cli.commands.user_command.add_role'),
        args=(ARG_USERNAME_OPTIONAL, ARG_EMAIL_OPTIONAL, ARG_ROLE),
    ),