neovim: changes to how we access nvf.lib

outputs/pkgs/ook-vim/config/plugins/filetree.nix

@@ -0,0 +1,17 @@
+{
+  vim.filetree = {
+    neo-tree = {
+      enable = true;
+      setupOpts = {
+        filesystem = {
+          hijack_netrw_behavior = "open_current";
+          follow_current_file.enabled = true;
+        };
+      };
+    };
+  };
+  vim.maps.normal."<C-e>" = {
+    desc = "Toggle Tree";
+    action = "<cmd>Neotree toggle reveal<cr>";
+  };
+}