feat(core,dal,domain,snapshotWorker): Воркер по управлению снапшотами. Создание сгапшотов для таблицы RobotConfigurations

PARR.Domain/Entities/RobotEntities/RobotConfigurationSnapshot.cs

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+using Microsoft.EntityFrameworkCore;
+using PARR.Domain.Constants;
+using PARR.Domain.Entities.Base;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace PARR.Domain.Entities.RobotEntities
+{
+    /// <summary>
+    /// Снимки заданий роботам
+    /// </summary>
+    [Table("ConfigurationSnapshots", Schema = DatabaseSchemas.Robot)]
+    [Index(nameof(RobotCode), nameof(DateCreated))]
+    [Comment("Снимки заданий роботам")]
+    public class RobotConfigurationSnapshot : IBaseEntity
+    {
+        [Key]
+        public Guid Id { get; set; }
+
+        public DateTimeOffset DateCreated { get; set; }
+
+        [NotMapped]
+        public DateTimeOffset? DateModified { get; set; }
+
+        public int RobotCode { get; set; }
+
+        public int RobotStatusCode { get; set; }
+
+        public int TaskStatusCode { get; set; }
+
+        [Comment("Количество заданий в этой комбинации статусов")]
+        public int Count { get; set; }
+
+
+        [ForeignKey(nameof(RobotCode))]
+        public Robot? Robot { get; set; }
+
+        [ForeignKey(nameof(RobotStatusCode))]
+        public RobotStatus? RobotStatus { get; set; }
+
+        [ForeignKey(nameof(TaskStatusCode))]
+        public TaskStatus? TaskStatus { get; set; }
+    }
+}