[neovim] Adds github copilot

home-manager/features/neovim/config/lua/plugins/copilot.lua

@@ -0,0 +1,6 @@
+return {
+  -- Add Github Copilot plugin.
+  -- It still needs to be configured with `:Copilot setup`.
+  -- See `:help copilot` for more information
+  { "github/copilot.vim" },
+}