Support Chrome on Android with web-serial-polyfill in the Example Pages.

[Lan-Hekary]

Add Google Chrome on Android version 61 or later via the web-serial-polyfill compatibility layer.

I tested it and it works as expected with Chrome on Android Phones and Tablets.

[brianignacio5]

LGTM thanks for your contribution

[Lan-Hekary]

Thanks @brianignacio5 ,
Thanks for the merge, it's working as expected.
I Just realized that I can use the package from the CDN(JSDeliver or unpkg) instead of putting it in the package.json file and bundle it with the site assets.
I don't know if it is the right way to import external modules (Import from CDN or Bulid and bundle it with the site), I'd love to hear you opinion on the matter.
If you want me to make this change too, I can make it
It's more aligned with the current codebase and won't affect the functionality.