회원가입 로직에 광고 트래킹 적용

- 광고 트래킹 관련 Entity 추가
- pid가 현재 광고 중인 pid인 경우 트래킹 로그 생성

src/main/kotlin/kr/co/vividnext/sodalive/member/signUp/SignUpRequest.kt

@@ -7,6 +7,7 @@ data class SignUpRequest(
     val password: String,
     val nickname: String,
     val gender: Gender,
+    val marketingPid: String? = null,
     val isAgreeTermsOfService: Boolean,
     val isAgreePrivacyPolicy: Boolean,
     val container: String = "api"

src/main/kotlin/kr/co/vividnext/sodalive/member/signUp/SignUpResponse.kt

@@ -0,0 +1,9 @@
+package kr.co.vividnext.sodalive.member.signUp
+
+import kr.co.vividnext.sodalive.member.login.LoginResponse
+
+data class SignUpResponse(
+    val memberId: Long,
+    val marketingPid: String?,
+    val loginResponse: LoginResponse
+)