Add :Rg[!] command

:Rg <STRING> grep for the string and fuzzy find the results, bang to
enable regex in search term

lua/commands.lua

@@ -83,3 +83,13 @@ end, {
 -- TODO: :Chmod
 
 -- TODO: :Mkdir
+
+-- :Rg <STRING> grep for the string and fuzzy find the results, bang to enable
+-- regex in search term
+vim.api.nvim_create_user_command('Rg', function(opts)
+  local grep_opts = { search = opts.args }
+  if opts.bang then
+    grep_opts['use_regex'] = true
+  end
+  require('telescope.builtin').grep_string(grep_opts)
+end, { bang = true, nargs = '*' })