add some more plugins

config/plugins/editor/illuminate.nix

@@ -0,0 +1,13 @@
+{
+  plugins.illuminate = {
+    enable = true;
+    underCursor = false;
+    filetypesDenylist = [
+      "Outline"
+      "TelescopePrompt"
+      "alpha"
+      "harpoon"
+      "reason"
+    ];
+  };
+}

config/plugins/editor/undotree.nix

@@ -0,0 +1,20 @@
+{
+  plugins.undotree = {
+    enable = true;
+    settings = {
+      autoOpenDiff = true;
+      focusOnToggle = true;
+    };
+  };
+  keymaps = [
+    {
+      mode = "n";
+      key = "<leader>ut";
+      action = "<cmd>UndotreeToggle<CR>";
+      options = {
+        silent = true;
+        desc = "Undotree";
+      };
+    }
+  ];
+}