Attribute arguments for context generators

[aaronmallen]

Elevator pitch, describe and sell us your feature request

As a developer,
I want to be able to give the Context generator attribute arguments
so that attributes are automatically defined on my context class when it is generated.

Is your feature request related to a problem

It would be nice to be able to generate an interactor with a given set of attributes and have the generator automatically populate those attributes:

rails generate interactor MyInteractor first_name last_name

# app/interactors/my_interactor_context.rb
class MyInteractorContext < ApplicationContext
  attributes :first_name, :last_name
end

# app/interactors/my_interactor.rb
class MyInteractor
  def perform
    # TODO implement MyInteractor call
  end
  
  def rollback
    # TODO implement MyInteractor rollback
  end
end