feat: #19 광고 상품 모델 domain 추가

src/main/java/com/backend/soullive_a/entity/ProductModel.java

@@ -0,0 +1,42 @@
+package com.backend.soullive_a.entity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import java.time.LocalDateTime;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Table(name = "PRODUCT_MODEL")
+@Getter
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class ProductModel {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "ID")
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "PRODUCT_ID", nullable = false)
+    private Product product;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "MODEL_ID", nullable = false)
+    private Model model;
+
+    @Column(name = "SEARCH_TIME", nullable = false)
+    private LocalDateTime searchTime;
+}

src/main/java/com/backend/soullive_a/repository/ProductModelRepository.java

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+package com.backend.soullive_a.repository;
+
+import com.backend.soullive_a.entity.ProductModel;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ProductModelRepository extends JpaRepository<ProductModel, Long> {
+
+}