[SPEC] POC of Rayon / wasm-utils on the dApp

[AhmedKorim]

Overview

The wasm-utils and arkworks tools can be built with parallelization using rayon. This may also now be available in the chrome browser and could potentially lead to large speedups in ZKP generation and note generation.

Tasks

• A proof of concept using: https://github.com/GoogleChromeLabs/wasm-bindgen-rayon.
• Spec out some tasks relevant for full integration.