Add file explorer shortcut

Nautilus for Gnome, must be changed for thunar for Xfce, and for ranger
when experienced.

Install/Templates/config/i3/config

@@ -211,6 +211,7 @@ bindsym $mod+Ctrl+g exec gimp
 bindsym $mod+Ctrl+k exec keepassxc
 bindsym $mod+Ctrl+a exec atril
 bindsym $mod+Ctrl+m exec mumble
+bindsym $mod+Ctrl+n exec nautilus
 
 # resize window (you can also use the mouse for that)
 mode "resize" {