feat: WishlistStatus 추가

- soft delete 관리를 위함

Author: MEOHIN

src/main/java/com/back/domain/wishlist/enums/WishlistStatus.java

@@ -0,0 +1,9 @@
+package com.back.domain.wishlist.enums;
+
+import lombok.Getter;
+
+@Getter
+public enum WishlistStatus {
+    ACTIVE,
+    DELETED
+}