frameworks/node: add benchmark implementation

[nigrosimone]

Node was on the board only through frameworks (express, fastify, koa, nestjs, node-h3, hono-node), with no bare node:http line to read them against. bun, deno and go-stdlib already have one.

One file, no dependencies: http.createServer, routing by string comparison on req.url, query parsed by hand, and zlib.gzipSync on /json because node:http negotiates nothing.

node:cluster forks one worker per core, but each worker binds 8080 with reusePort, so the kernel spreads the accepts the way bun and deno do, not the cluster round robin.

Profiles are the same six as bun, deno and go-stdlib. Checked with the image on 4 cpus: 4 workers, 4 LISTEN sockets on 8080, and every endpoint the profiles use.