Login and UKI updates (#1860)

* Change DM to SDDM

* Move to custom named UKI

* Skip creation on Mac

* Add entry to make sure VSCode uses gnome keyring

* Fix order for UKI generation

* Limine only

* BTRFS only

install/login/sddm.sh

@@ -0,0 +1,14 @@
+sudo mkdir -p /etc/sddm.conf.d
+
+if [ ! -f /etc/sddm.conf.d/autologin.conf ]; then
+  cat <<EOF | sudo tee /etc/sddm.conf.d/autologin.conf
+[Autologin]
+User=$USER
+Session=hyprland-uwsm
+
+[Theme]
+Current=breeze
+EOF
+fi
+
+chrootable_systemctl_enable sddm.service