feat: nixvim refactor

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

@@ -0,0 +1,37 @@
+{ lib, ... }:
+{
+  options.programs.nixvim = lib.mkOption {
+    type = lib.types.submodule (
+      { config, ... }:
+      {
+        imports = [
+          ./auto-save.nix
+          ./auto-format.nix
+          ./harpoon.nix
+          ./mergetool.nix
+          ./lazygit.nix
+          ./trouble.nix
+          ./undotree.nix
+
+          ./base/completion.nix
+          ./base/diagnostics.nix
+          ./base/find.nix
+          ./base/formatting.nix
+          ./base/status-line.nix
+          ./base/syntax.nix
+          ./base/tree.nix
+
+          ./languages/angular.nix
+          ./languages/c.nix
+          ./languages/css.nix
+          ./languages/js.nix
+          ./languages/lua.nix
+          ./languages/nix.nix
+          ./languages/python.nix
+          ./languages/rust.nix
+          ./languages/shell.nix
+        ];
+      }
+    );
+  };
+}