Add further default commerce events

Problem/Motivation

Currently we only provide two commerce events.

I think, there's room for more that make sense.
Also see other modules that implement this already: https://gorannikolovski.com/blog/drupal-google-analytics-4-and-commerce-...

CART_ORDER_ITEM_REMOVE
(CART_ORDER_ITEM_UPDATE)?

Should we also track the different checkout steps optionally? (Passing their machine name?)

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes