Faster Native Implementations

[amiller-gh]

Hey @tcr!

As discussed here whatwg/html#793 and here nodejs/node#34355, there are now faster, native methods for running structured clone in both Node.js and the browser.

I'd like to propose we modify this repo to use the native MessageChannel interfaces to provide an async interface for both browser and Node.js environments, and the sync interface for Node.js environments, if it is supported. The sync interface for the browser, and in environments that don't support MessageChannel, would fall back to the existing implementation.

It would be very convenient for the package named structured-clone on NPM to support all these cases in the fastest way possible :)

Happy to help implement. Interested in contributions?