refactor(waybar): register owned modules

configs/nixos/modules/desktop/session/hyprland/default.nix

@@ -1,6 +1,7 @@
 {
   config,
   lib,
+  util,
   ...
 }:
 # The Hyprland compositor.
@@ -227,5 +228,19 @@
         };
       }
     ];
+
+    registry.waybar.${config.networking.hostName}."hyprland/workspaces" = {
+      position = "left";
+      order = 10;
+      settings = {
+        on-click = "activate";
+        format = "{id} {windows}";
+        format-window-separator = " ";
+        window-rewrite-default = util.glyph "f2d0";
+        window-rewrite = lib.mapAttrs' (
+          _name: windowIcon: lib.nameValuePair "class<${windowIcon.class}>" windowIcon.icon
+        ) (lib.attrByPath [ config.networking.hostName ] { } config.registry.window-icon);
+      };
+    };
   };
 }