Put more integration links to eca d.o page

There are even more integrations meanwhile that we should also add at the same time. Let's follow the updated slides from https://go.lakedrops.com/eca-ddd2023

ECA Commerce

ECA Easy Email

I have added some more from the slides at DDD23 and also granted issue credits.

Automatically closed - issue fixed for 2 weeks with no activity.