Inadequate multi-thread example

[SpanishPear]

This is about:

• A typo
• Innaccurate/misleading documentation (e.g. technically incorrect advice)
• Undocumented code
• Outdated documentation
• Other

Problem
The current example for multi threading using yew agents does not work when run with Trunk (or, at all?).

Details about the solution you'd like (Optional)
I'd like to add an additional example of multithreading using web workers to the repository, one that actually works, without waiting on trunk's progress with this feature. @insou22 has a working demo which you can view live here, or at the repo here - which I'd like to fold into the examples.

Additional context (Optional)
There are a few instances of people asking support on the discord, which shows it's something that would be great to have.

Questionaire (Optional)

• I'd like to write this documentation
• I'd like to write this documentation but I'm not sure what's needed
• I don't have time to add this right now, but maybe later

[SpanishPear]

(spelling is hard)

[mc1098]

Totally agree with this :)

When writing the notes in the README for the example, I'd still add a small note about the Trunk issue - this lets us quickly review the progress and when that feature is added we can either add a new example to go side-by-side with this one or adapt it to use Trunk depending on the state of things at that time.

[mc1098]

Oh I'm sorry!
Thank you @SpanishPear for taking this up :)
and thank you @insou22 for the demo.
Together you will save another poor soul from staying up into the early hours trying to get this working themselves without a guide ❤️