docs: An example that implements broadcast communication

[testwhygh]

It's a PR to solve the problem "add an example to README as to how to broadcast a message to all worker threads using BroadcastChannel". This code has been tested,

[metcoder95]

This is amazing, thanks!
Could you rather add it to the docs/examples section?

[ronag]

You should also make sure to set the flag that makes sure piscina doesn't use blocking Atomics.wait

[testwhygh]

This is amazing, thanks! Could you rather add it to the docs/examples section?

Of course, I will also add it to docs/docs/examples

[testwhygh]

You should also make sure to set the flag that makes sure piscina doesn't use blocking Atomics.wait

Yes, setting the flag useAtomics to false avoids using Atomics.wait, but why should I do this? Is it for better concurrency performance?

[metcoder95]

You should also make sure to set the flag that makes sure piscina doesn't use blocking Atomics.wait

Yes, setting the flag useAtomics to false avoids using Atomics.wait, but why should I do this? Is it for better concurrency performance?

Is to avoid the thread to be blocked when idle (we use Atomic.wait to put the thread on hold until further tasks are enqueued).

[testwhygh]

You should also make sure to set the flag that makes sure piscina doesn't use blocking Atomics.wait

Yes, setting the flag useAtomics to false avoids using Atomics.wait, but why should I do this? Is it for better concurrency performance?

Is to avoid the thread to be blocked when idle (we use Atomic.wait to put the thread on hold until further tasks are enqueued).

Thanks, I have modified it.

[metcoder95]

lgtm

[testwhygh]

lgtm
Hello, should I do anything else to get this PR completed?

[metcoder95]

Let's just add a comment of why useAtomics is disabled, and it should be ready to go

[testwhygh]

Of course, it is necessary