'.' keybind in snacks.explorer could toggle *and* remember the workspace

[JxJxxJxJ]

For example

dir a:
|- file 1
|- file 2
|- file 3
|- dir b 
   |- file b1
   |- file b2
   |- file b3

If I have file 2 opened and I press '.' in the explorer view to set dir a opened, it would be cool if now all files under dir a now have dir a as "workspace root"

For example opening file 2 would have dir a as root, same with file b2 and so on

Sounds useful?