feat: move sddm to be manually enabled

hosts/brontes/configuration.nix

@@ -38,6 +38,8 @@
     ];
   };
 
+  services.displayManager.sddm.enable = true;
+
   services.dbus.enable = true;
 
   programs = {

modules/sddm.nix

@@ -1,7 +1,12 @@
-{ self, pkgs, ... }:
 {
+  self,
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+lib.mkIf config.services.displayManager.sddm.enable {
   services.displayManager.sddm = {
-    enable = true;
     wayland.enable = true;
     autoNumlock = true;
     theme = "catppuccin-mocha";