Provide real name instead of alias

[fcollonval]

With a snippet like,

import {
  AccordionItem as BaseAccordionItem
} from '@microsoft/fast-foundation';


export class MyElement extends BaseAccordionItem {
	foo = 'foo';
}

The manifest as the following description:

          "superclass": {
            "name": "BaseAccordionItem",
            "package": "@microsoft/fast-foundation"
          },

Wouldn't it be more interesting to know that we are using an alias and that the real name is AccordionItem. Something like:

          "superclass": {
            "alias": "BaseAccordionItem",
            "name": "AccordionItem",
            "package": "@microsoft/fast-foundation"
          },