[ ] Admin can register a group with the bot through /register, bot will confirm in private chat
[ ] Admin can create a badge for the group: /create id, title, icon (photo) - in private chat. Photo should come from imgur for simplicity. Example: /create FE_NOVICE Beginner with front end https://imgur.com/gallery/girl-chair-magic-trick-637jWG4
[ ] Admin can grant user a badge: /grant @[username] badge_id, Example: /grant @hieubt88 FE_NOVICE
[ ] User can see badges: /badge -> return the user's icon list of badges, /badge @hieubt88 -> return the icon list of badges of hieubt88
[ ] User can see all badges: /all_badge -> return all badge id, title and icon
/create FE_NOVICE Beginner with front end https://imgur.com/gallery/girl-chair-magic-trick-637jWG4/grant @hieubt88 FE_NOVICE/badge-> return the user's icon list of badges,/badge @hieubt88-> return the icon list of badges of hieubt88/all_badge-> return all badge id, title and icon