add vim surround and vim helm

nvim/lua/plugins.lua

@@ -112,6 +112,8 @@ require("packer").startup(function(use)
   use {
     'ThyW/todotxt.nvim',
     branch = "vim-ui-input",
-	requires = {'MunifTanjim/nui.nvim'},
+    requires = { 'MunifTanjim/nui.nvim' },
-}
+  }
+  use 'tpope/vim-surround'
+  use 'towolf/vim-helm'
 end)