hanno on Nostr: Assuming I neither want to learn how to parse ics files or how caldav works ...

Assuming I neither want to learn how to parse ics files or how caldav works internally. Isn't there any tool that takes an ics file and uploads it to a caldav-capable calendar? Or am I thinking wrong, and I should solve my problem in a different way? How? Can anyone point me to a howto/doc/blogpost that is simple and explains how to do that?