[noise] Python and Javascript libraries

[Trevor Perrin]

Hi all,

I've linked Piotr's "noiseprotocol" python library, and Nazar's
"noise-c.wasm" javascript library, on the website:

https://noiseprotocol.org/

They both pass the cacophony vectors (except for PSKs in javascript,
but that will be updated when the underlying Noise-C library is).

I think these libraries (and all our libraries!) could use more code
review, testing with other vectors, optimization and extension to
different crypto libraries, and so on.

But our language coverage is filling out nicely, so thanks Piotr and
Nazar for contributing!


Trevor