feat(linux/vfs): integrate openvfs linux virtual files plugin

[mgallien]

Resolves

#

Summary

TODO

• ...

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[mgallien]

currently able to complete the initial synchronization
missing is proper communication between the openvfs fuse daemon and the desktop files client
will need investigation

[mgallien]

Current UI on linux to decide what type of synchronization the user wants to enable

@kra-mo We would want to offer an easy way to test the linux virtual files plug-in while recommending people to not use for production use (until it is ready for that)
any idea how to tune the UI to achieve that ?
I understand that this may not be easy to do 😄
I would still like to have an easy way of discovering the new feature (currently I modified the code as if the plug-in should be the default as seen in the screenshot)
previous experimental plug-in needed to modify the configuration file manually

[kra-mo]

@mgallien I think being straightforward with the text is probably the best idea. For example:

Virtual files (beta)
Download files on-demand. This feature is in an early preview. Recommended only with proper backups.

And don't have it be the default selection.