change some niri config, add setup script for nobara on PC

dotfiles/kitagawa/niri.kdl

@@ -1,3 +1,5 @@
+include "./shared.kdl"
+
 input {
     keyboard {
         repeat-delay 600
@@ -63,4 +65,6 @@ window-rule {
 }
 switch-events {
     lid-close { spawn "systemctl hibernate"; }
-}
+}
+
+include "noctalia.kdl"