feat: nixvim refactor

modules/home-manager/programs/nixvim/presets/harpoon.nix

@@ -0,0 +1,38 @@
+{ lib, config, ... }:
+let
+  cfg = config.presets.harpoon;
+in
+{
+  options.presets.harpoon = {
+    enable = lib.mkEnableOption "Harpoon";
+  };
+
+  config = lib.mkIf cfg.enable {
+    keymaps = [
+      {
+        key = "hh";
+        mode = "n";
+        action = ":Telescope harpoon marks<CR>";
+      }
+    ];
+    plugins = {
+      telescope.enable = true;
+      harpoon = {
+        enable = true;
+        enableTelescope = true;
+        keymaps = {
+          addFile = "hm";
+          navNext = "hn";
+          navPrev = "hp";
+        };
+      };
+      which-key.registrations.h = {
+        name = "Harpoon";
+        h = "Marks";
+        m = "Mark";
+        n = "Next";
+        p = "Prev";
+      };
+    };
+  };
+}