feat: nixvim refactor

modules/home-manager/programs/nixvim/presets/languages/css.nix

@@ -0,0 +1,29 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+let
+  cfg = config.presets.languages.css;
+in
+{
+  options.presets.languages.css = {
+    enable = lib.mkEnableOption "CSS";
+    stylelint = lib.mkEnableOption "stylelint";
+  };
+
+  config = lib.mkIf cfg.enable {
+    plugins = {
+      none-ls = lib.mkIf cfg.stylelint {
+        enable = true;
+        sources = {
+          diagnostics.stylelint.enable = true;
+          formatting.stylelint.enable = true;
+        };
+      };
+      lsp.servers.cssls.enable = true;
+    };
+    extraPackages = lib.mkIf cfg.stylelint [ pkgs.nodePackages.stylelint ];
+  };
+}