add copilot

change chatgpt input from C-CR to C-s (otherwise trapped by Windows terminal)

init.lua

@@ -661,6 +661,7 @@ require('lazy').setup({
       'hrsh7th/cmp-nvim-lsp',
       'hrsh7th/cmp-path',
     },
+    'github/copilot.vim',
     config = function()
       -- See `:help cmp`
       local cmp = require 'cmp'