Add user management domain and seed model

Distribution/Models/RolePermission.cs

@@ -0,0 +1,15 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Distribution.Models
+{
+    public class RolePermission : Template
+    {
+        public Guid FK_RoleId { get; set; }
+        [ForeignKey("FK_RoleId")]
+        public Role Role { get; set; }
+
+        public Guid FK_PermissionId { get; set; }
+        [ForeignKey("FK_PermissionId")]
+        public Permission Permission { get; set; }
+    }
+}