mu-plugins code

site-post-types.php

<?php

function site_post_types() {
  // Project
  register_post_type('project', array(
    'show_in_rest' => true,
    'supports' => array('title', 'editor', 'excerpt'),
    'rewrite' => array('slug' => 'projects'),
    'has_archive' => true,
    'public' => true,
    'labels' => array(
      'name' => 'Projects',
      'add_new_item' => 'Add New Project',
      'edit_item' => 'Edit Project',
      'all_items' => 'All Projects',
      'singular_name' => 'Project'
    ),
    'menu_icon' => 'dashicons-admin-tools'
  ));

  // Skill
  register_post_type('skill', array(
    'show_in_rest' => true,
    'supports' => array('title'),
    'rewrite' => array('slug' => 'skills'),
    'has_archive' => true,
    'public' => true,
    'labels' => array(
      'name' => 'Skills',
      'add_new_item' => 'Add New Skill',
      'edit_item' => 'Edit Skill',
      'all_items' => 'All Skills',
      'singular_name' => 'Skill'
    ),
    'menu_icon' => 'dashicons-media-code'
  ));

  // Clients
  register_post_type('client', array(
    'show_in_rest' => true,
    'supports' => array('title', 'editor', 'thumbnail'),
    'rewrite' => array('slug' => 'clients'),
    'has_archive' => true,
    'public' => true,
    'labels' => array(
      'name' => 'Clients',
      'add_new_item' => 'Add New Client',
      'edit_item' => 'Edit Client',
      'all_items' => 'All Clients',
      'singular_name' => 'Client'
    ),
    'menu_icon' => 'dashicons-businesswoman'
  ));
}

add_action('init', 'site_post_types');