Registers the bundle and imports the shop routes, which expose the page the customer returns to from the bank-hosted payment page. Without that import the return URL cannot be built and the payment fails before it even leaves.
No config/packages: both configuration keys of the plugin have real defaults.
No add-lines either, the plugin ships no JavaScript. The two remaining steps cannot be automated and are recalled by post-install.txt: generating the Sylius payment encryption key, and declaring the trusted proxies, x-forwarded-host included, without which the URLs handed to the bank are unreachable.
