Remove, or isolate, Phoenix Live View Dependency

[VictorGaiva]

I'm thinking about using this library on the resolution of a :absinthe field, with a custom computation. But this repo requires a specific version of LiveView, which I'm not using and it makes me unable to add safe_code as a dependency.

[leandrocp]

That's an interesting idea, even though I think it was not planned.

Wdyt @TheFirstAvenger? Contributions are welcome for this feature?