[Feature] Enable DurableObject Storage's transaction API

[TannerRogalsky]

Is there an existing issue for this?

• I have searched the existing issues

Description

The function that creates a transaction for a DurableObject's Storage is currently commented out. See here:

workers-rs/worker/src/durable.rs

Lines 445 to 464 in 3db61a4

	// TODO(nilslice): follow up with runtime team on transaction API in general
	// This function doesn't work on stable yet because the wasm_bindgen `Closure` type is still nightly-gated
	// #[allow(dead_code)]
	// async fn transaction<F>(&mut self, closure: fn(Transaction) -> F) -> Result<()>
	// where
	// F: Future<Output = Result<()>> + 'static,
	// {
	// let mut clos = |t: Transaction| {
	// future_to_promise(async move {
	// closure(t)
	// .await
	// .map_err(JsValue::from)
	// .map(|_| JsValue::NULL)
	// })
	// };
	// JsFuture::from(self.inner.transaction_internal(&mut clos)?)
	// .await
	// .map_err(Error::from)
	// .map(|_| ())
	// }

The comment about nightly features is no longer relevant and I have a local changeset that enables this functionality with the existing dependency versions.

The documentation on this API indicates that it shouldn't generally be necessary to invoke this but there are still some cases where it is useful: https://developers.cloudflare.com/durable-objects/api/transactional-storage-api/#supported-options-2