a bunch of stuff added . . .

lua/custom/plugins/copilot.lua

@@ -0,0 +1,14 @@
+return {
+  'github/copilot.vim',
+  lazy = false,
+  init = function()
+    local map = vim.api.nvim_set_keymap
+
+    map('i', '<C-o>', 'copilot#Accept("<CR>")', { expr = true, silent = true })
+  end,
+  config = function()
+    vim.g.copilot_no_tab_map = true
+    vim.g.copilot_assume_mapped = true
+    vim.g.copilot_tab_fallback = ''
+  end,
+}