[Feature] Extend Wasm Based Proving to include NodeJS

[iamalwaysuncomfortable]

🚀 Feature

Currently browser-based proving via wasm with javascript bindings is fully functional. However, NodeJS proving is not yet available.

Currently the main protocol limitation preventing NodeJS from being able to use Wasm based proving is parameter downloads employing WebSys for the wasm compilation target. With some limited modifications to SnarkVM parameter download flow, it will be possible to create parameter downloads that is general to both NodeJS and web browsers.

Secondly, via a node JS polyfill it will be possible to use node workers to achieve multi-threading in node to achieve state of the art proof times.

Motivation

Extension of proving from browsers to NodeJS will enable the all Aleo technology to be used from Javascript.

Implementation

• Provide a node polyfill for web workers within the SDK to enable a single API for multithreading #732

[iamalwaysuncomfortable]

Finished by PRs:

#756
#758
#765
#766
#768
#769