[JS] Implement C Data Interface

I've recently been working on an implementation of the C Data Interface for Arrow JS, the idea being that Arrow JS can read memory from WebAssembly this way without a copy (blog post, repo). Dominik suggested starting a discussion about potentially adding this into Arrow JS.

My implementation is still WIP but figure it's not too early to start a discussion. A couple notes:

• I'm focused only on reading FFI memory, so I only have parsing code. I figure writing doesn't really make sense in JS since Wasm can't access arbitrary JS memory
• In order to generate FFI memory in the tests, I'm using a small Rust module to convert from an IPC table. If we didn't want to add a rust build step in the tests, that module could be published to NPM

Thoughts?