[JS Parser] Add support for renamed enums

[maorleger]

Today our (JS) APIView parser uses the text property to generate the APIView line for a given item.

This works most of the time, but when you rename an item (either on import or export) the text property will contain the original name instead of the publicly visible name.

Example:

// src/generated/index.ts
export enum KnownJsonWebKeyEncryptionAlgorithm { ... }

// src/index.ts
import { KnownJsonWebKeyEncryptionAlgorithm as KnownEncryptionAlgorithm }
export { KnownEncryptionAlgorithm }

output doc-model from APIExtractor:

{
     "canonicalReference": "@azure/keyvault-keys!KnownEncryptionAlgorithms:enum",
     "excerptTokens": [
         {
            "kind": "Content",
            "text": "export declare enum KnownJsonWebKeyEncryptionAlgorithm "
        }
     ],
     "members": [ ]
     "fileUrlPath": "src/generated/models/models.ts",
     "kind": "Enum",
     "name": "KnownEncryptionAlgorithms",
     "preserveMemberOrder": false,
     "releaseTag": "Public"
}

In this case, the APIView will show KnownJsonWebKeyEncryptionAlgorithm but we have all the information needed to display the correct name. This issue tracks making changes to the parser to support this scenario.