Resource Events don't get dispatched

[mamazu]

In the Sylius context when creating or modifying a resource, it is common to dispatch events like sylius.order.pre_create or sylius.order.post_delete. Those are normally dispatched in the ResourceController of Sylius. But this plugin does not implement those events. Which makes it hard to write event listeners for processes in the AdminOrderCreation Plugin.

Reference: https://docs.sylius.com/en/1.3/book/architecture/events.html