added a notes file for important running stuff

Create working for tenant and added in efcore and data layer

Emergence.data/Models/Tenant.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Text;
+
+namespace Emergence.data.Models
+{
+    public class Tenant
+    {
+        [Key]
+        public Guid Id { get; set; }
+
+        [Required]
+        public required string TenantCode { get; set; }
+
+        [Required]
+        public required string CompanyName { get; set; }
+
+        [Required]
+        public required bool IsInactive { get; set; }
+
+    }
+}