Add api for optional stock

src/main/java/cn/stock/market/infrastructure/db/po/OptionalStockPO.java

@@ -0,0 +1,35 @@
+package cn.stock.market.infrastructure.db.po;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.experimental.SuperBuilder;
+import org.hibernate.annotations.DynamicInsert;
+import org.hibernate.annotations.DynamicUpdate;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@SuperBuilder
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Entity
+@DynamicInsert
+@DynamicUpdate
+@Table(
+        name = "optional_stock"
+)
+public class OptionalStockPO {
+    @Id
+    @GeneratedValue(
+            strategy = javax.persistence.GenerationType.IDENTITY
+    )
+    Integer id;
+
+    String symbol;
+
+    String company;
+}

src/main/java/cn/stock/market/infrastructure/db/repo/OptionalStockRepo.java

@@ -0,0 +1,7 @@
+package cn.stock.market.infrastructure.db.repo;
+
+import cn.stock.market.infrastructure.db.po.OptionalStockPO;
+import com.rp.spring.jpa.GenericJpaRepository;
+
+public interface OptionalStockRepo extends GenericJpaRepository<OptionalStockPO, Integer> {
+}