ohmu/third/drupal/mustikas11/create_contact.php

<?php
// Loo contact feedback vorm (D7-s oli "Website feedback" -> test+emal@odamus.com)
use Drupal\contact\Entity\ContactForm;

$form = ContactForm::load('feedback');
if (!$form) {
  $form = ContactForm::create([
    'id' => 'feedback',
    'label' => 'Website feedback',
    'recipients' => ['ardokubjas@gmail.com'],
    'reply' => '',
    'weight' => 0,
    'message' => 'Your message has been sent.',
    'redirect' => '',
  ]);
  $form->save();
  echo "created feedback form\n";
} else {
  echo "feedback form already exists\n";
}

// Määra vaikimisi vormiks feedback.
$settings = \Drupal::configFactory()->getEditable('contact.settings');
$settings->set('default_form', 'feedback')->save();
echo "default_form=feedback\n";

// Vastuseks D7 menüü link /contact -> contact.site_page route.
echo "done\n";