Add Vue.js support

[radiantone]

Is your feature request related to a problem? Please describe.
I cannot use PCUI easily within my Vue.js app. The javascript model "will" work, but not as robust integration.
Additionally, providing Vue components hides all the observer and data binding mechanics. Just drop in your component, declare your model for it and the rest is done for you. 10x easier than writing observers for everything.

The React implementation does not cleanly separate UI from logic (because that's how react is designed). Whereas Vue has a clean separation between your view template (basic markup) and your class logic. It is much easier to code when these things are separate vs embedding UI markup inside javascript (not a design pattern).

Describe the solution you'd like
Vue.js models for PCUI.

Describe alternatives you've considered
I can probably get by using the javascript version of PCUI for now, but it will require some special handling and extra code to wire up to my Vue app.

Additional context
Building a web based visual editor for story narrations.