feat(dal): Добавлена таблица WorkGroups и AppInWorkGroups

PARR.DAL/Models/WorkGroup.cs

@@ -0,0 +1,23 @@
+using PARR.DAL.Models.Base;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace PARR.DAL.Models
+{
+    [Table("WorkGroups")]
+    public class WorkGroup : IBase
+    {
+        [Key]
+        public Guid Id { get; set; }
+
+        public DateTimeOffset DateCreated { get; set; }
+
+        [NotMapped]
+        public DateTimeOffset? DateModified { get; set; }
+        public required string Name { get; set; }
+
+        public ICollection<Host> Hosts { get; set; } = new HashSet<Host>();
+
+        public ICollection<AppInWorkInWorkGroup> AppInWorks { get; set; } = new HashSet<AppInWorkInWorkGroup>();
+    }
+}