feat(member): 가입과 로그인 응답에 신규 회원 여부를 추가한다

src/main/kotlin/kr/co/vividnext/sodalive/member/MemberController.kt

@@ -77,7 +77,7 @@ class MemberController(
         )
 
         val message = messageSource.getMessage("member.signup.success", langContext.lang)
-        return ApiResponse.ok(message = message, data = response.loginResponse)
+        return ApiResponse.ok(message = message, data = response.loginResponse.copy(isNew = true))
     }
 
     @PostMapping("/signup")
@@ -96,7 +96,7 @@ class MemberController(
         }
 
         val message = messageSource.getMessage("member.signup.success", langContext.lang)
-        return ApiResponse.ok(message = message, data = response.loginResponse)
+        return ApiResponse.ok(message = message, data = response.loginResponse.copy(isNew = true))
     }
 
     @PostMapping("/login")
@@ -440,7 +440,7 @@ class MemberController(
         }
 
         val message = messageSource.getMessage("member.signup.success", langContext.lang)
-        return ApiResponse.ok(message = message, data = response.loginResponse)
+        return ApiResponse.ok(message = message, data = response.loginResponse.copy(isNew = response.isNew))
     }
 
     private fun extractBearerToken(authHeader: String, provider: MemberProvider): String {

src/main/kotlin/kr/co/vividnext/sodalive/member/login/LoginResponse.kt

@@ -1,9 +1,14 @@
 package kr.co.vividnext.sodalive.member.login
 
+import com.fasterxml.jackson.annotation.JsonProperty
+
 data class LoginResponse(
     val userId: Long,
     val token: String,
     val nickname: String,
     val email: String,
-    val profileImage: String
+    val profileImage: String,
+    @get:JsonProperty("isNew")
+    @param:JsonProperty("isNew")
+    val isNew: Boolean = false
 )