add config

config/plugins/utils/toggleterm.nix

@@ -0,0 +1,23 @@
+{
+  plugins.toggleterm = {
+    enable = true;
+
+    settings = {
+      size = 20;
+      close_on_exit = false;
+      hide_numbers = true;
+      shade_terminals = true;
+      shading_factor = 1;
+      start_in_insert = true;
+      persist_size = true;
+    };
+  };
+  keymaps = [
+    {
+      mode = ["n" "i"];
+      key = "<c-\>";
+      action = "<cmd>ToggleTerm direction=horizontal<cr>";
+      options.desc = "Toggle Horizontal Terminal Window";
+    }
+  ];
+}