Merge branch 'main' into 'next-3.x'

ajax/frontend/basket.php

ajax/frontend/delivery.php

ajax/frontend/getOrder.php

ajax/frontend/getSimpleCheckoutControl.php

ajax/frontend/orderWithCosts.php

ajax/frontend/update.php

bin/frontend/controls/SimpleCheckout.js

bin/frontend/controls/SimpleCheckoutBillingAddress.js

bin/frontend/controls/SimpleCheckoutDelivery.js

bin/frontend/controls/SimpleCheckoutPayment.js

bin/frontend/controls/SimpleCheckoutShipping.js

bin/images/demo/placeholder-image-vertical-grey.png

composer.json

locale.xml

phpstan-baseline.neon

settings.xml

src/QUI/ERP/Order/SimpleCheckout/Basket.ArticleList.html

src/QUI/ERP/Order/SimpleCheckout/Basket.ForHeader.html

src/QUI/ERP/Order/SimpleCheckout/Basket.css

src/QUI/ERP/Order/SimpleCheckout/Basket.php