added copilot completion plugin for neovim

nvim/lua/settings/lazy/plugins/copilot-cmp.lua

@@ -0,0 +1,7 @@
+return {
+  "zbirenbaum/copilot-cmp",
+  event = "InsertEnter",
+  config = function ()
+    require("copilot_cmp").setup()
+  end
+}