feat 跳板机中间api

Src/Dlhis.Middle/Services/IOrderService.cs

@@ -0,0 +1,10 @@
+using Dlhis.Middle.Request;
+using Dlhis.Middle.Response;
+using Kurisu.AspNetCore.UnifyResultAndValidation;
+
+namespace Dlhis.Middle.Services;
+
+public interface IOrderService : IScopeDependency
+{
+    Task<DefaultApiResult<OrderResultResponse>> AddAsync(OrderAddRequest request);
+}