add Grg command

lua/polish.lua

@@ -1,3 +1,11 @@
 -- This will run last in the setup process.
 -- This is just pure lua so anything that doesn't
 -- fit in the normal config locations above can go here
+
+vim.api.nvim_create_user_command("Grg", function(opts)
+  -- print(table.concat({ "-g", opts.fargs[1] }, " "))
+  require("telescope.builtin").live_grep { additional_args = { "-g", opts.fargs[1] } }
+end, {
+  desc = "Add a glob-rule to the telescope live ripgrep",
+  nargs = 1,
+})