feat: modified default login daemon to use grueetd

modules/nixos/bundles/desktop/default.nix

@@ -18,7 +18,7 @@ in {
     ${namespace} = {
       desktop = {
         env = {
-          gdm = enabled;
+          greetd = enabled;
           hyprland = enabled;
           x11 = enabled;
         };

modules/nixos/desktop/env/greetd/default.nix

@@ -0,0 +1,23 @@
+{
+  config,
+  lib,
+  namespace,
+  pkgs,
+  ...
+}: let
+  inherit (lib) mkIf mkEnableOption;
+  inherit (lib.${namespace}) getAttrByNamespace mkOptionsWithNamespace;
+  base = "${namespace}.desktop.env.greetd";
+  cfg = getAttrByNamespace config base;
+in {
+  options = mkOptionsWithNamespace base {
+    enable = mkEnableOption "greetd";
+  };
+
+  config = mkIf cfg.enable {
+    services.greetd = {
+      enable = true;
+      settings.default_session.command = "${pkgs.tuigreet}/bin/tuigreet --time --cmd Hyprland";
+    };
+  };
+}