do not show hidden shares

[individual-it]

Shares that are set to hidden in the ocis webUI, should not be listed in moodle ether fixes #73

The information about if a share is hidden or not is provided by the sharedWithMe endpoint of ocis. Using the id of the resource we can associate the share from sharedWithMe with the resource from WebDAV, if that share is set to be hidden, we simply skip it.

While testing this:

• be aware of this bug: https://github.com/owncloud/ocis/issues/8232 (shares received by multiple routes will still show up in moodle, even if they are set to be hidden)
• use an ocis >= 5.0.0-rc.2