abstract

edit

• refactor gameview
  now unify scene view's and game view's engine state to one state

• refactor package
  extract editor whole, engine whole package as top package;
  extract three, asset, core, ui, event, xxxrender as sub packages;

• abstract ui control

add

• extract "Input" contribute for ui control

• add custom input, custom action

• support import multiple element contributes

• add ShowPublishElements