List user roles

def list_user_roles(*_, user_id):
    """ List user roles """
    click.echo(green('\nListing user roles:'))
    click.echo(green('-' * 40))
    with get_app().app_context():
        user = find_user(dict(id=user_id))
        if not user:
            click.echo(red('User not found\n'))
            return

        for index,role in enumerate(user.roles):
            click.echo('{}. {}: {}'.format(
                index + 1,
                yellow(role.handle),
                role.title
            ))

    click.echo()