### Description

Airflow Connection testing using airflow CLI would be very useful  , where users can quick add test function to test connection in their applications. It will benefit CLI user to create and test new connections right from instance and reduce time on troubleshooting any connection issue. 

### Use case/motivation

airflow connection testing using airflow CLI , similar function as we have in Airflow CLI. 
example:  airflow connection test "hello_id"

### Related issues

N/A

### 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)

or urlunsplit(
                    (
                        new_conn.conn_type,
                        f"{new_conn.login or ''}:{'******' if new_conn.password else ''}"
                        f"@{new_conn.host or ''}:{new_conn.port or ''}",
                        new_conn.schema or "",
                        "",
                        "",
                    )
                ),
            )
            print(msg)
        else:
            msg = f"A connection with `conn_id`={new_conn.conn_id} already exists."
            raise SystemExit(msg)
@cli_utils.action_cli
def connections_delete(args):
    """Deletes connection from DB."""
    with create_session() as session:
        try:
            to_delete = session.query(Connection).filter(Connection.conn_id == args.conn_id).one()
        except exc.NoResultFound:
            raise SystemExit(f"Did not find a connection with `conn_id`={args.conn_id}")
        except exc.MultipleResultsFound:
            raise SystemExit(f"Found more than one connection with `conn_id`={args.conn_id}")
        else:
            session.delete(to_delete)
            print(f"Successfully deleted connection with `conn_id`={to_delete.conn_id}")
@cli_utils.action_cli(check_db=False)
def connections_import(args):