Merge pull request '975-ApiQuotationItemResponse 아이켐(양단케이블) 타입 코드 추가' (#13) from feature/cha into dev

Reviewed-on: #13

src/main/java/com/interplug/qcast/biz/master/dto/quotation/ApiQuotationItemResponse.java

@@ -14,4 +14,7 @@ public class ApiQuotationItemResponse {
 
   @Schema(description = "수량")
   public Integer amount;
+
+  @Schema(description = "아이템 타입 코드")
+  public String itemTpCd;
 }