SharedWorker support

[rmdort]

Please add SharedWorker support to parcel.

https://developer.mozilla.org/en/docs/Web/API/SharedWorker

[DeMoorJasper]

At first sight this seems to be pretty similar to workers (from a bundlers perspective). The regex of worker should probably be updated to also include SharedWorkers and this should work. Not sure what's not working right now.

[rmdort]

Just like web workers, Shared worker should be compiled into a separate bundle by parcel.

[DeMoorJasper]

Like I said it's probably not being catched by the current Regex

[KeineLimonade]

I developed a quick fix and wrote a test for it. I hope this helps