Add cc and bcc

Add cc and bcc fields to user contact methods
part of this tutorial https://generatewp.com/?p=10641

// Register User Contact Methods
function user_contactmethods( $user_contact_method ) {

	$user_contact_method['cc'] = __( 'CC email address (multiple: Comma separated emails)', 'GWP' );
	$user_contact_method['bcc'] = __( 'BCC email address (multiple: Comma separated emails)', 'GWP' );

	return $user_contact_method;

}

// Hook into the 'user_contactmethods' filter
add_filter( 'user_contactmethods', 'user_contactmethods' );