Rework of wizzywid to a full designer app ( fork at https://github.com/node-projects/web-component-designer )

[jogibear9988]

We are looking to rework the example to a more feature rich designer, but will take a while.

We've already converted it to typescript and polymer 3.

At the moment we're reworking the resizeing, draging and we've started to implement multiselection.

See at : https://github.com/node-projects/web-component-designer