Request: Migrate to package:web

[MosMercDev]

"The Dart team recently overhauled the collection of features and APIs that allow developers access to JavaScript and browser bindings in their Dart code. This next generation of web interop not only improves user experience, but also enables Wasm support, aligning Dart with the future of the Web."

More details: https://dart.dev/interop/js-interop

Would be great to update libphonenumber_web to support Wasm!

[Kal-Elx]

Hey @MosMercDev! I also came across this issue when trying to run an app with wasm.
I opened a pull request #39 with instructions for how to override the dependency which will let you build your app using wasm.