Provide service using { providedIn: 'root' }

[adrdilauro]

Hi! Great module, it's such a breeze to be able to use a native Angular library rather than injecting buggy external ones

Would it be possible to provide the service via @Injectable({ providedIn: 'root' })? We would prefer it for our use case, in order to avoid letting the service pollute other bundles.

https://angular.io/guide/providers

Thanks for the attention!

[swiety85]

Feel free to provide PR.