add linediff.vim

lua/plugins.lua

@@ -562,6 +562,12 @@ local plugins = {
     config = function () require("trouble").setup() end,
     cmd = "Trouble",
   },
+  {
+    "andrewradev/linediff.vim",
+    config = function()
+      vim.keymap.set({ "n", "v" }, "<leader>d", ":Linediff <cr>", { desc = "Linediff" })
+    end
+  },
 }
 
 return plugins