first commit

Models/ClientInvoiceItem.cs

@@ -0,0 +1,18 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Fitness_core_BE.Models
+{
+    public class ClientInvoiceItem
+    {
+        [Key]
+        public Guid ClientInvoiceItemId { get; set; }
+        public Guid FKClientInvoiceId { get; set; }
+        [ForeignKey("FKClientInvoiceId")]
+        public virtual ClientInvoice ClientInvoice { get; set; }
+        public string? ItemName { get; set; }
+        public string? ItemDescription { get; set; }
+        public decimal ItemPrice { get; set; }
+        public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    }
+}