refactor(home): organize home manager modules

home/modules/pandoc/default.nix

@@ -0,0 +1,19 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+{
+  options.pandoc = {
+    enable = lib.mkEnableOption "pandoc";
+  };
+
+  config = lib.mkIf config.pandoc.enable {
+    home.packages = with pkgs; [
+      haskellPackages.pandoc-crossref
+      pandoc
+      texliveSmall
+    ];
+  };
+}