Setup as a real Julia package

[ChrisRackauckas]

https://www.youtube.com/watch?v=QVmU29rCjaA
https://www.youtube.com/watch?v=3IoqyXmAAkU

Those are two resources that will help quite a bit.

Also you can use a repository like https://github.com/SciML/LinearSolve.jl as inspiration as to how to do it, in terms of file names and everything.

Try to follow https://github.com/SciML/SciMLStyle, though note if you don't match the style when starting out that's okay (there's a lot to learn, don't worry about doing everything correct the first time).