Support for Angular 6.0.x and @nguniversal/express-engine 6.x

[SergiusSidorov]

Angular Express Engine 6 natively provide request and response through injection tokens:
import { REQUEST, RESPONSE } from '@nguniversal/express-engine/tokens';
Previous version on @ngx-utils/cookies uses string constants for injection and need additional code at server.js.

[lgoudriaan]

Can this PR get merged?

[aescarcha]

Please merge this, 7.0 is coming soon....

[segux]

Merge this one please!

[skyquartam]

To work around this issue, simply put this in your app.server.module.ts

providers: [
    {
      provide: 'REQUEST',
      useValue: REQUEST
    },
    {
      provide: 'RESPONSE',
      useValue: RESPONSE
    }

And rember to add this to your server.ts

app.get("*", (req, res) => {
  res.render("index", { req, res });
});