Attempt to strip Prisma WASM module

[NathanFlurry]

Motivation

Prisma takes 2 MB with its query engine. This should be able to be stripped significantly.

Implementation

https://rustwasm.github.io/book/reference/code-size.html

This will require an external dependency, so it should be an opt-in feature. We'll likely serve a pre-stripped WASM binary if the benefits are large enough.