Change the order of imports to get rid of a warning.

[Lich-Corals]

I just noticed that the program always shows a PyGIWarning when running in terminal. I moved the gi import above the Gtk nad Gdk imports to remove the warnings.

Those are the warnings which were shown:

PyGIWarning: Gdk was imported without specifying a version first. Use gi.require_version('Gdk', '4.0') before import to ensure that the right version gets loaded.
  from gi.repository import Nautilus, GObject, Gdk, Gtk
PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '4.0') before import to ensure that the right version gets loaded.
  from gi.repository import Nautilus, GObject, Gdk, Gtk

[Lich-Corals]

Great work btw. I'm using your extension nearly every day. Thanks!