Group-owned shares and invites to/from groups about ocm-api

[michielbdejong]

Also, share-to-group is possible in the share-with flow of OCM but not in the invite-first flow. We need to think more about this.

One blocking factor in working on this is that the invite-first flow is so far only implemented in Reva, and I think Reva's groups support is not very extensive yet (at least in the master branch).

[smesterheide]

Are group owned shares any different from re-shares? Consider a resource (file or folder) owned by a particular user that is being shared with a group. Any member can request to re-share the resource with other users or groups (local or remote) given the necessary permissions. The resource gains more independent shares during the process. In Nextcloud re-shares are handled by the instance that the owner user is home to (notification type REQUEST_RESHARE).

[michielbdejong]

Yes, I think there is a difference. It removes the need to assign a particular group member as the "owner".
So something like https://apps.nextcloud.com/apps/groupfolders / https://www.youtube.com/watch?v=LaTd-TTj41Q but cross-server! :)