Nano ID bindings

[naturallymitchell]

this generator library supports the best available ID scheme I've found, and it looks like good, simple code:

Nano ID for Rust

https://news.ycombinator.com/item?id=19073908

[dariusc93]

Url to crate for nano id is https://github.com/nikolay-govorov/nanoid

[naturallymitchell]

lemme add it to the Readme before closing

also, I don't get what we need to look out for. is there an issue to track?