앞으로 읽어보아야 할 것들
RxSwift/GettingStarted.md at main · ReactiveX/RxSwift
MVVM - Input / Output 아키텍처
[iOS][RxSwift] Input과 Output을 사용한 MVVM 아키텍처
PublishSubject
RxSwift - Subject란? (PublishSubject, Behavior Subject, Replay Subject, Variable)