LibJS: Add ECMA-262 section/title/URL comments almost everywhere

As mentioned on Discord earlier, we'll add these to all new functions
going forward - this is the backfill. Reasons:

- It makes you look at the spec, implementing based on MDN or V8
  behavior is a no-go
- It makes finding the various functions that are non-compliant easier,
  in the future everything should either have such a comment or, if it's
  not from the spec at all, a comment explaining why that is the case
- It makes it easier to check whether a certain abstract operation is
  implemented in LibJS, not all of them use the same name as the spec.
  E.g. RejectPromise() is Promise::reject()
- It makes it easier to reason about vm.arguments(), e.g. when the
  function has a rest parameter
- It makes it easier to see whether a certain function is from a
  proposal or Annex B

Also:

- Add arguments to all functions and abstract operations that already
  had a comment
- Fix some outdated section numbers
- Replace some ecma-international.org URLs with tc39.es

Userland/Libraries/LibJS/Runtime/VM.cpp

@@ -551,13 +551,13 @@ void VM::run_queued_promise_jobs()
     VERIFY(!m_exception);
 }
 
-// 9.4.4 HostEnqueuePromiseJob, https://tc39.es/ecma262/#sec-hostenqueuepromisejob
+// 9.5.4 HostEnqueuePromiseJob ( job, realm ), https://tc39.es/ecma262/#sec-hostenqueuepromisejob
 void VM::enqueue_promise_job(NativeFunction& job)
 {
     m_promise_jobs.append(&job);
 }
 
-// 27.2.1.9 HostPromiseRejectionTracker, https://tc39.es/ecma262/#sec-host-promise-rejection-tracker
+// 27.2.1.9 HostPromiseRejectionTracker ( promise, operation ), https://tc39.es/ecma262/#sec-host-promise-rejection-tracker
 void VM::promise_rejection_tracker(const Promise& promise, Promise::RejectionOperation operation) const
 {
     switch (operation) {