add dap watch under cursor keymap <leader>cdw

lua/config/keymaps.lua

@@ -58,4 +58,7 @@ if status_ok then
   vim.keymap.set("n", "<leader>cdu", function()
     require("dapui").toggle()
   end, { desc = "Debug: Toggle UI" })
+  vim.keymap.set("n", "<leader>cdw", function()
+    require("dapui").elements.watches.add(vim.fn.expand("<cword>"))
+  end, { desc = "DAP Add Watch under cursor" })
 end