WebAssembly (WASM) notification group

Github Label: O-wasm
Ping command: @rustbot ping wasm

This list will be used to ask for help both in diagnosing and testing WebAssembly-related issues as well as suggestions on how to resolve interesting questions regarding our WASM support.

The group also has an associated Zulip channel (#t-compiler/wasm) where people can go to pose questions and discuss WASM-specific topics.

So, if you are interested in participating, please sign up for the WASM group! To do so, open a PR against the rust-lang/team repository. Just follow this example, but change the username to your own!