Print the binary size as part of Done in ...s message

[rimutaka]

💡 Feature description

I'd like to know the binary size every time it is built.
It is a very useful piece of info that requires extra steps or a workaround to obtain at the moment.

The new message with the minimal change may look like this:

[INFO]: ✨   Done, 156,858 bytes in 0.36s`

A more informative output may look like this:

[INFO]: ⬇️  Installing wasm-bindgen...
[INFO]: 🗜️  Binary size: 156,858 bytes
[INFO]: ✨  Build time: 0.36s
[INFO]: 📦  Location: vue/src/wasm-rust.

I am happy to submit a PR if the maintainers are willing to consider it.