Structs to Core Data

Imagine we're working at the newest, hot, tech startup: Books Bunny. We offer an Artificial Intelligence with a browser plugin that automatically analyses all the sites that the user visits and automatically bookmarks the relevant urls.

Our server backend is obviously written in Swift. Since we have millions of site visits active in our system at a time, we'd like to use structs for the analysis part of each site that a user visits. However, if our AI decides that this is worthy of a bookmark, we'd like to use CoreData to store this type in a database.

Now, we don't want to write custom serialization to Core Data code whenever we introduce a new struct. Rather, we'd like to develop this in a way so that we can utilize it for all future structs we develop.

So, how do we do that?