Add Go example

[lukasngl]

Hi, since Go can compile to WASM I thought it might be nice to have it as an example.

[astrale-sharp]

Hey and thanks 😇
Silly question while my real computer is being repaired, do the tests pass? I take it you tried it?

Code looks good, will merge as soon as I test it works, don't hesitate to ping me if I forget

[astrale-sharp]

Also, maybe let's not add a submodule and just add the example directly in the repo