CRUD permissions - set permissions

[tobiasKaminsky]

Adopt CRUD permission setting from web UI.

[mpivchev]

Mobile must have these permissions for Folders:

And these permissions for Files:
(Create is missing cuz makes no sense)

[alperozturk96]

@mpivchev @tobiasKaminsky Ready for review

Android PRs:

Client PR: nextcloud/android#14729
Library PR: nextcloud/android-library#1706

[mpivchev]

@tobiasKaminsky @alperozturk96 iOS ready for review:

nextcloud/ios#3459