support worker execArgv

[MrPupik]

I'm using workerpool in nodejs with worker_threads. I've noticed that threads does not throw errors.
after some digging I noticed that my thread is running async function and that he default thread behavior for UnhandledPromiseRejection is not to exit.

to support this, worker_thread has execArgv parameter:
const worker = new Worker(__filename, { execArgv: [...process.execArgv, '--unhandled-rejections=strict' ] })

see full discussion here

Could you support such option somehow? currently I'm implementing specific handleThreadError function for this

[josdejong]

Ah, good point. So, the library does have support for passing options like execArgv to child_process: forkArgs and forkOpts, but something similar for the execArgv of worker_thread is missing, right? Makes sense to add support for that.

Anyone interested in working this out in a PR? Help would be welcome.

[josdejong]

This is addressed now in v6.3.0 thanks to #357