Allow creating new windows when find/filter returns no windows

[ygormutti]

I'm aware of the /new /pop and /quick commands, but the following workflow would feel more natural to me:

1. Highlight the tabs I want to move to some window
2. Press F1 to open Winger panel
3. Type the name of the window
4. Realize I haven't created this window yet
5. Use Ctrl/Shift + Enter to bring/send windows to a new window that Winger creates with that name I typed

I barely use Winger commands, so I haven't memorized them but I use F1, find/filter, Ctrl/Shift + Enter all the time, and by implementing this feature request I could do everything I want without memorizing any commands

Thank you very much for this amazing extension!