feat(util/stream): util.inherits + stream prototype scaffold (express unblocked)

[proggeramlug]

Summary

• Express compile crashed at util.inherits(SendStream, Stream) inside node_modules/send/index.js:173 — Stream.prototype was undefined because the V8-fallback node:stream shim returned a plain { Readable, Writable, ... } namespace, not the legacy Stream constructor Node ships.
• Rewrite the node:stream shim around a real Stream class with its own .prototype and EventEmitter-shaped instance methods. Attach Readable/Writable/Duplex/Transform/PassThrough/pipeline/finished as static properties, then export default Stream + export const __perry_commonjs = true so require('stream') returns the class itself (matching Node).
• Harden util.inherits(ctor, superCtor) in the node:util shim: input validation, TypeError when superCtor.prototype is undefined (matches Node's message), and Object.defineProperty(ctor, 'super_', ...) for the legacy chaining pattern.
• Add property("stream", "prototype") to the API manifest so the Compile-time error for unimplemented Node / Web APIs #463 unimplemented-API gate accepts Stream.prototype reads.

Verification

import express from 'express' — previously crashed with

TypeError: Object prototype may only be an Object or null: undefined
    at Object.inherits (node:util:14:52)
    at send/index.js:356:6

After this PR: typeof express === 'function'.

test-files/test_util_inherits.ts (V8-routed via .js fixture, mirrors the express/send pattern):

typeof Stream: function
typeof Stream.prototype: object
typeof Stream.Readable: function
typeof Stream.Readable.prototype: object
SendStream.super_ === Stream: true
Bar instanceof Foo: true
Bar.greet(): hello
Bar.super_ === Foo: true

Test plan

• cargo build --release -p perry-runtime -p perry-stdlib -p perry-jsruntime -p perry
• cargo fmt --all
• test-files/test_util_inherits.ts — all 8 assertions pass
• Express reproducer (import express from 'express') compiles + runs + prints function
• CI: lint / cargo-test / parity / compile-smoke / api-docs-drift / security-audit