Pass objects on command.execute

Pass objects instead of using a switch statement.
Now I don't have to restart the bot whenever I add a new command
that needs specific arguments other than 'message'.

commands/userinfo.js

@@ -5,7 +5,7 @@ const creationJoinDates = require("../util/creationJoinDates")
 module.exports = {
     name: 'userinfo',
     description: 'Displays information about the user',
-    execute(message, args) {
+    execute({message, args}) {
         let info;
         let nickname = "";
         if (!args[0]) {