Tracking Issue for the WASM | WASI | Emscripten notification groups

[juntyr]

Adapted from https://forge.rust-lang.org/compiler/notification-groups.html#notification-groups:

• Propose the group by preparing a Major Change Proposal (MCP): Create a notification group for WASM #794
• File a tracking issue in the rust-lang/compiler-team repository to collect your progress: Tracking Issue for the WASM | WASI | Emscripten notification groups #799
• Create a PR against the rust-lang/team repository adding the notification group: Add wasm | wasi | emscripten notification groups team#1578
• Configure the rust-lang/rust repository to accept triagebot commands for this group: Add WASM | WASI | Emscripten groups to triagebot.toml rust#131875
• Create a PR for the rustc-dev-guide amending the notification group section to mention your group: Add the WASM | WASI | Emscripten notification groups rustc-dev-guide#2100
• Create a sample PR for the rust-lang/team repository showing how one can add oneself. This will be referenced by your blog post to show people how to join: Add ferris to the Emscripten team team#1579, Add ferris to the WASI team team#1580, and Add ferris to the WASM team team#1581
• Create a Zulip stream for the notification group: https://rust-lang.zulipchat.com/#narrow/stream/463513-t-compiler.2Fwasm
• Write an announcement blog post for Inside Rust and open a PR against blog.rust-lang.org.