Run wasm-opt on hqx module

codecs/hqx/loading_benchmark.js

@@ -0,0 +1,11 @@
+// THIS IS NOT A NODE SCRIPT
+// This is a d8 script. Please install jsvu[1] and install v8.
+// Then run `npm run --silent benchmark`.
+// [1]: https://github.com/GoogleChromeLabs/jsvu
+
+async function init() {
+  const start = Date.now();
+  const module = await WebAssembly.compile(readbuffer("pkg/squooshhqx_bg.wasm"));
+  print(`${Date.now()/1000 - start/1000}`);
+}
+init().catch(e => console.error(e.stack));