dcco-8.x-3.x-dev/modules/dcco_store/modules/dcco_registration/dcco_registration.install

<?php

/**
 * Install, update, or uninstall scripts.
 */

/**
 * Implements hook_install().
 */
function dcco_registration_install() {
  module_load_include('inc', 'dcco_store', 'inc/dcco_store');

  $product = [
    'title' => 'Camp Registration',
    'type' => 'camp_registration',
  ];

  $variations = [[
    'title' => 'Camp Registration',
    'type' => 'camp_registration',
    'price' => '0.00',
    'sku' => 'camp_registration',
  ]];

  dcco_store_create_product($product, $variations);
}