Add project files.

FaKrosnoEfDataModel/Services/IScheduleOrderService.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using FaKrosnoEfDataModel.Dtos;
+
+namespace FaKrosnoEfDataModel.Services
+{
+    public interface IScheduleOrderService
+    {
+        Task<IEnumerable<ScheduleOrderDto?>> GetEntities();
+        Task<ScheduleOrderDto?> GetById(int id);
+        Task<IEnumerable<ScheduleOrderDto?>> GetByRecipientId(int recipientId);
+        Task<IEnumerable<ScheduleOrderDto?>> GetEntitiesByLastUpdateDate(DateTime date);
+        Task<IEnumerable<ScheduleOrderDto?>> GetByRecipientAndLastUpdateDate(int recipientId, DateTime date);
+    }
+}