Stunner based JS bundle for creating custom domains

Goal

Stunner must be exposed as a JavaScript library / framework in order to allow the creation of editors for custom domains (declared in JS as well)

Actions

1. Domain
   1. JS native Domain Adapter's (KOGITO-7999)
   2. Refactor domain configuration state (Domain initialization stuff) to an object
   3. Support for JS native domain models (isNative=true, declaration, initialization, etc)
   4. Js native API's
   5. Fields for Diagram/Graph/Node/Edge, etc are not properly exposed to js, they're still obfuscated (maybe cause those are private final?)
2. Shapes
   1.  Create some generic Shape & ShapeView types -> js declarations should only worry about lienzo (multipath / children)
   2. Create some generic ShapeFactory for use in js declarations
   3. Js runtime Shape Declarations (Shape, ShapeFactory, etc)
   4.  Kirill Issues on edit mode with selection feature
   5.  - Kirill Issues with shapes title. No need for init at constructor, it is a runtime property that may change
3. Marshalling
   1. Check serialization issues reported by Dmitrii
   2. Default JSON/YAML parsers for Diagram instance
4. Bundling
   1. Standalone Runtime Editor bundle ( WIP see this branch )
   2. ES6 Modules ( See this work from Dmitrii )
5. J2CL migration
6. Clean-ups
   1. drop errai data binders / uibinders (+dep to modules)
   2. drop gwt uibinders (+dep to modules)
   3. drop gwtbootstrap (+dep to modules)
   4. Decouple from unnecessary resources (js,css,etc)
      1. See SwfDiagramEditorResources.ts
      2. Analyze stunner-widges dependencies to resources, other modules shouldn't depend on