Documentation: How to build surrealdb.wasm

[nickchomey]

Description

There aren't any instructions in the Readme on how to build surrealdb.wasm.

I found this comment in the discord

Heya! We really need to include this stuff in the README, sorry about that! Should be as simple as:
Having installed PNPM and Wasm-Pack
pnpm i
make build

I haven't tried it, but assume it'll work. This should be added to the readme.

Install docs for pnpm and wasm-pack

Is there an existing issue for this?

• I have searched the existing issues

Code of Conduct

• I agree to follow this project's Code of Conduct

[nickchomey]

I also had to install rust

And install clang (on ubuntu apt install clang)