passing domain object to EvalWidget

[aktxyz]

The example shows how to pass a string into an EvalWidget like so ...

args: [$String('Example name')]

Can you provide an example for passing an instance of domain class into EvalWidget, both the on the dart side (args: ..) and in the eval'd code string. It seems there also needs to be way to make the eval'd code aware of the class def, normally an import.

[Ethan]

Closing as duplicate of ethanblake4/dart_eval#79