Add support for the JavaScript Temporal API

[paulo-assoc]

Either have built-in support for the Temporal API or support the npm package temporal-polyfill. A complete rust implementation of the Temporal API (used in V8) is here https://github.com/boa-dev/temporal.

[proggeramlug]

Thanks for the request — and the boa-dev/temporal pointer, that is exactly the route we are taking.

We have opened a tracker for native Temporal support via the temporal_rs crate: #4686. It is broken into dependency-ordered per-type issues (Duration, Now, Instant, PlainDate/Time/DateTime, YearMonth/MonthDay, ZonedDateTime) plus a parity harness. Work is starting shortly and will land incrementally, type by type.

Follow #4686 for progress.