Created New Tutorial for Sharing C++ Models With QML

There existed a tutorial on how to share C++ code with QML, so I figure that another tutorial on how to share models could be helpful. I also wanted to try to simplify some information and make it easier to understand.

I want to add info on how to edit, add, and remove data too, but I want to get feedback while I continue (which is why this is a draft).

Right now, I just need to proofread some stuff and add appropriate links.