Does the UWP version currently support bookmarks

I couldn't find it, is it possible to add it(like how the android version does it)

Not yet.
Even if customers' basis wasn't asking for it we have planned the development of such a feature.
It will be included in next main release which will support also Cordova development.

Thank you, when you say cordova does that mean I would be able to develop a uwp application on cordova

Yes.
We're planning the development of Cordova plugin for Windows10.
Not sure yet about WindowsPhone as MS definitively abandoned it.