Add SharedArrayBuffer

[david542542]

In 2018, the Spectre and Meltdown vulnerabilities sent crippling shockwaves through the internet. Today, we are facing the repercussions of these events, in particular in software that runs arbitrary user code – such as web browsers. Shortly after the publications, all major browser vendors restricted the use of SharedArrayBuffers to prevent dangerous timing attacks.
Source: https://duckdb.org/2021/10/29/duckdb-wasm.html#multithreading

It seems the limitation of not using SharedArrayBuffer shouldn't be a concern anymore, as all major browsers support this: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer.

Are we able to add support for that now?

[david542542]

(I think this may be already added just need to figure out COI?)