Microservices approach for authentication

Please address copilot reviews first. FYI for lms, we are adopting a microservices approach where we obtain the auth token from the main nusc.club website and all user permissions should be handled there. For the next sprint, we shall evaluate adopting that approach for this app too

_Originally posted by @yihao03 in https://github.com/usdevs/QueueBot/pull/1#pullrequestreview-3664168702_
            