Add Publicize support for WPJM Job Listings

functions.php

<?php
/*
Plugin Name: WP Job Manager - Publicize using Jetpack
Plugin URI: https://kraft.im/
Description: Use Jetpack's Publicize feature with WP Job Manager listings.
Author: Brandon Kraft
Author URI: https://kraft.im/
Version: 1.0
License: GPL 2+
*/

function add_publicize_to_wpjm_listings() {
	add_post_type_support( 'job_listing', 'publicize' );
}
add_action( 'init', 'add_publicize_to_wpjm_listings' );