fix(harpoon): harpoon2 deprecated message (#2920)

* fix(config): harpoon2 deprecated message when adding new file to list and fix auto save on file list toggle

* fix: Update harpoon2.lua to add pleanery dep

* fix: no need for plenary deps here

---------

Co-authored-by: Alan Alvarenga <alan.alvarengamejia@telus.com>
Co-authored-by: Rubin Bhandari <roobin.bhandari@gmail.com>
Co-authored-by: Folke Lemaitre <folke.lemaitre@gmail.com>

lua/lazyvim/plugins/extras/editor/harpoon2.lua

@@ -5,13 +5,16 @@ return {
     menu = {
       width = vim.api.nvim_win_get_width(0) - 4,
     },
+    settings = {
+      save_on_toggle = true,
+    },
   },
   keys = function()
     local keys = {
       {
         "<leader>H",
         function()
-          require("harpoon"):list():append()
+          require("harpoon"):list():add()
         end,
         desc = "Harpoon File",
       },
@@ -22,7 +25,7 @@ return {
           harpoon.ui:toggle_quick_menu(harpoon:list())
         end,
         desc = "Harpoon Quick Menu",
-      }
+      },
     }
 
     for i = 1, 5 do
@@ -35,5 +38,5 @@ return {
       })
     end
     return keys
-  end
+  end,
 }