Possibility to synchronize subfolder of a space

[kaivol]

Pre-submission Checks

• [X] I checked for similar issues, but could not find any. I also checked the closed issues. I could not contribute additional information to any existing issue.
• [X] I will take the time to fill in all the required fields. I know that the bug report may be dismissed otherwise due to lack of information.

Feature description

Add the possibility to synchronize individual subfolders of a Space to different, indepentent locations on the local system.

This would make it possible, for example, to use different physical drives for different folders or to synchronize predefined locations like Windows' Desktop folder. I suppose it could also improve performance if only a small part of a potentionally huge Space is synchronized.

Proposed solution

After clicking Add Space and subsequently choosing a Space to add (e.g. Personal), I would like to be able to select a subfolder in the space.

Alternative solutions you considered

Alternatively one could use different Spaces for this purpose, but I assume that this is not the intended use case for Spaces, as by default users don't even have the ability to create Spaces.

Additional context

I seem to remember that this was possible in older versions of ownCloud or the desktop client...

I'm using

• owncloud oCIS cersion3.0.0-alpha.2+e0b6ca0e2
• desktop client version 4.0.0.10732-rc1 (Windows)
• also tried version 3.2.1 of the desktop client