[On behalf of Lexmark]: Add export of FileLikeObject to allow callbac…

…k to function (valor-software#619)

src/index.ts

@@ -2,5 +2,6 @@ export * from  './file-upload/file-select.directive';
 export * from  './file-upload/file-drop.directive';
 export * from  './file-upload/file-uploader.class';
 export * from './file-upload/file-item.class';
+export * from './file-upload/file-like-object.class';
 
 export { FileUploadModule } from './file-upload/file-upload.module';