use upstream emulator from hello

[Simon-Laux]

would be good if there were synced somehow, like it being also an npm package.

[adbenitez]

it would be nice but for that we first need the emulator to be in npm, I think it makes sense if the basic emulator is part of the webxdc-dev package, that anyways also need it

[Simon-Laux]

I think it makes sense if the basic emulator is part of the webxdc-dev package, that anyways also need it

webxdc-dev has it's own emulator