Remove Usecases from Presentation layer

[theScrabi]

We should stay with the MVVM concept once we decided for it.Therefore we should find a way to remove the UI dependencies in the UseCases which are currently located in our presentation layer. They must be put into the domain layer instead: https://github.com/owncloud/android/tree/master/owncloudApp/src/main/java/com/owncloud/android/usecases

[abelgardep]

This is a good point that needs some research.

Context

At the moment we only have 3 use cases in the presentation layer. All of them are related to uploads because we use the WorkManager to perform the camera uploads. In those workers, some notifications are triggered and string resources are needed. That's why I decided to add them to the presentation layer. I agree that use cases belong to the domain layer but in this case, it was not easy at all. We need to check how to get it.

[jesmrec]

Solution: move all resources, strings etc.. to a separate module.