Use only webdav for sharing information

[tobiasKaminsky]

Currently Android uses webdav for folder/file listing and OCS API for retrieving share information.
With nc:sharee this is not needed anylonger.

Thus it should be replaced by only using webdav:
nc:sharee and nc:mount-type are the relevant information

To check
Outgoing shares

• public link
• mail
• circles
• user
• group
• federated share

Incoming shares

• user
• group
• circles
• groupfolders

Info:

• incoming shares can be distingueshed via nc:mount-type and oc:owner-id, oc:owner-display-name
• outgoing shares are listed within nc:sharee

Task

• replace by webdav
• make sure that all share cases still work
• test if file/folder icons are still correct
• test if all share information are retrieved when clicking on file details

[tobiasKaminsky]

Web:
https://github.com/nextcloud/server/blob/master/apps/files_sharing/src/files_actions/sharingStatusAction.ts#L40-L68

[mpivchev]

iOS already uses webdav for share info. We only use OCS API for share details.

[tobiasKaminsky]

Web / folder preview: https://github.com/nextcloud/server/blob/master/apps/files/src/components/FileEntry/FileEntryPreview.vue#L200

[alperozturk96]

Android PRs:

nextcloud/android-library#1741
nextcloud/android#14989