Hide the mount directory in Finder until the mount actually occurs

Mounting shares under ~/Networkshares is done in two steps:

• create mount directory
• call NetFSMountURLSync
• if the call was not successful, delete the directory

Until the mount fails or wille be canceled due to a timeout, an empty directory will remain at the mount point.

@am93ypaj suggests:
The Network Share Mounter can hide the mount directory and unhide it once the mount is complete. So the tasks could be:

• create mount directory
• hide the directory
• call NetFSMountURLSync
• if the call was successful, unhide the directory
• if the call was not successful, delete the directory