Implement resolveAs

[christopherthielen]

Add a new injectable $resolve$ for each node. $resolve$ contains the resolved data available for injection in that node.

Implement scope.$resolve support like ngRoute. Allows routing to components using a template like

.state('foo', {
  template: '<user-component user="$resolve.user"></user-component>',
  resolve: { user: UserService => UserService.getUser(); }
});