How should I make the folder structure when I create a plugin for Unity

I am creating a rogue-like game specific high-level visual programming asset for my thesis. So I started to build a node editor. Node editor works, however, I read that I can't reach the code inside the Editor folder during the runtime. So I decided to create 2 graphs. One for manipulating nodes inside the editor, and the other one for the runtime.

So I kind of confused how to make my folder structure. Here is my current structure.

 Assets
    +My-Framework
       +Editor
           +Common
           +UI
           +Utils
       +Resources
           +Data
           +Fonts
           +Graphics

Currently, my graph-related classes are all in the Common folder but, since it is inside the Editor folder, all these classes will be discarded in runtime or build. Thus, I won't get any benefit of those classes.

So I know that I should move those classes outside of the Editor folder.

I am also using some images from the Graphics folder in the Editor UI. So these images won't be necessary during the runtime but these are involving to the build as well. So those images should be inside the Editor folder.

This is confusing to me and I don't want to move further without making it clean.

What I am asking is; how should I keep my folder structure to make it as clean as possible?