RFC: Streamlined UX

[dherman]

This RFC proposes streamlining the directory layout and command-line UX of Neon projects, making the design simpler, more intuitive, and easier to learn and adopt.

In particular, starting a new Neon project looks like:

$ npm init neon my-project
...
✨ Created Neon project my-project. Happy 🦀 hacking! ✨
$ cd my-project
$ npm install
$ node -e 'console.log(require(".").hello())'
hello node

And the directory layout is flattened and simplified to:

my-project/
├── .gitignore
├── Cargo.toml
├── README.md
├── package.json
└── src
    └── lib.rs

Rendered RFC

[kjvalencik]

Something we may want to consider adding to this scope is making the fn build function for N-API part of the neon module.

It has zero dependencies and would allow users to use neon with only neon in their Cargo.toml.

I'm not sure how to accomplish it, but it would also be neat if building neon would fail with a helpful message if the user was missing a build.rs. This could allow for a workflow where users can cargo add neon and "follow the compiler."

[dherman]

@kjvalencik Thanks for the review, I addressed all your feedback.