Prefix commerce events or make them configurable

Problem/Motivation

The two events at /admin/config/services/posthog/commerce are named:
Product Added
Order Completed

Is that a Posthog default or something we set?

Without a context "Product Added" is quite unclear.

So I'd vote to make the events configurable using a textfield and predefine a value.
Maybe for the default we should prefix it with "Commerce:"?

Commerce: Product added to cart
Commerce: Order completed

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes