feat: init wallpapers, fix niri cursor

modules/features/layers/wallpapers.nix

@@ -0,0 +1,30 @@
+{ self, inputs, ... }: {
+  flake.nixosModules.wallpapers = { pkgs, lib, config, ... }: {
+
+    options.wallpaper-users = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      default = [];
+      description = "List of users to include wallpapers for";
+    };
+
+    options.wallpaper-destination = lib.mkOption {
+      type = lib.types.str;
+      default = "Pictures/Wallpapers";
+      description = "Destination path for wallpapers";
+    };
+
+    config = {
+      hjem = lib.mkIf (config.wallpaper-users != []) {
+        users = lib.genAttrs config.wallpaper-users (username: {
+          enable = true;
+          files = {
+            "${config.wallpaper-destination}".source = pkgs.runCommand "wallpapers" {} ''
+              mkdir -p $out
+              cp -r ${../../../assets/wallpapers}/* $out/
+            '';
+          };
+        });
+      };
+    };
+  };
+}