How to add Models, or storage classes

Suppose I want to just add a storage class, where I dont want to inherit from AActor, or UObject or anything, simply, I just want to add an empty default C++ class so that I can store values in there like FVectors and other primitives.

How can I add it to the build? Is there specific headers I must include in the new class such that the external build compiler recognizes the class?

If all you want is store variables I think what you want is struct

You can also make non-inherit class in add code to project in editor, should create class as you need