Implement github actions?

[tyler-jewell]

I am new to this repo and couldn't seem to identify how the tests are being ran. If ok, I can work on some unit tests for this repo that will be ran through github actions.

[a14n]

Thanks for your proposal!

Today the repo needs to be rewrite to use the new version of js-interop (related to #125) and it would be useless to spend time on writing tests at the moment.