회원가입

- 입력창 UI 수정
- 회원가입 단계 간소화

SodaLive/Sources/User/SignUp/SignUpRequest.swift

@@ -10,8 +10,6 @@ import Foundation
 struct SignUpRequest: Encodable {
     let email: String
     let password: String
-    let nickname: String
-    let gender: Gender
     let marketingPid: String
     let isAgreeTermsOfService: Bool
     let isAgreePrivacyPolicy: Bool