WebAssembly support

[pi0]

MDN: https://developer.mozilla.org/en-US/docs/WebAssembly/JavaScript_interface

WinterCG (min common API): ✅ https://common-min-api.proposal.wintercg.org/

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Additionally, we might somehow indicate ESM integration compatibility. Cloudflare runtime supports WASM exclusively with esm imports only (but it also does not follow the proposal!), not sure if it fits to this project or not. (also related: unwasm)