also refactor nixos modules

modules/nixos/editor/nano.nix

@@ -0,0 +1,32 @@
+{
+  config,
+  options,
+  lib,
+  pkgs,
+  ...
+}: let
+  inherit (lib) mkEnableOption mkIf;
+
+  cfg = config.sneeuwvlok.editor.nano;
+in {
+  options.sneeuwvlok.editor.nano = {
+    enable = mkEnableOption "nano";
+  };
+
+  config = mkIf cfg.enable {
+    programs.nano = {
+      enable = true;
+      syntaxHighlight = true;
+      nanorc = ''
+        set autoindent
+        set jumpyscrolling
+        set linenumbers
+        set mouse
+        set saveonexit
+        set smarthome
+        set tabstospaces
+        set tabsize 2
+      '';
+    };
+  };
+}