use Brucep\WordPress\ShortcodeHelper\ShortcodeHelper;

ShortcodeHelper::add('example', function ($atts, $content = null, $tag = null) {
    // shortcode functionality
});

use Brucep\WordPress\ShortcodeHelper\QuicktagHelper;

QuicktagHelper::add('Example', '[example]', '[/example]');
QuicktagHelper::add('HTML Comment', '<!--', '-->');
QuicktagHelper::enqueue(); // Quicktags are enqueued as a single script