Add NPM support via WASM

[Xytronix]

This adds npm build via wasm, I would say its useful moving forward.

I added the Yuksel WASM bindings, it won't build until yuksel is merged.

#17

[atomflunder]

Hi again!
First off thanks for taking your time to contribute. However, I don't know if this is a great use-case of this library.
The JavaScript ecosystem already has a great number of libraries for most of these rating systems.

To be honest, I don't have a great understanding of WASM but as I understand it the main point of it is to call it from the browser to offload some heavy computing to a faster language than JavaScript. I would assume calculating ratings is mostly done in the backend anyways, plus calculating single games is fairly fast, even in JS.

I made this calcluator for TrueSkill, the slowest algorithm included here in JavaScript (https://github.com/atomflunder/TrueSkill-Calculator) using the trueskill-ts package and it has been fast enough.

I am happy to hear your thoughts on something I am overlooking here

[Xytronix]

Your points are valid, I see two particular use cases:

• Accessibility (not all algorithms ported and a single library)
• Batch processing (if added) using WASM can providing a meaningful speed improvement over JavaScript

It wouldn't hurt maintainability too much and it would be great to have upcoming algorithms available in JavaScript.