Add pricing and supplier master data

Distribution/Models/PriceListItem.cs

@@ -0,0 +1,23 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace Distribution.Models
+{
+    public class PriceListItem : Template
+    {
+        public Guid FK_PriceListId { get; set; }
+        [ForeignKey("FK_PriceListId")]
+        public PriceList PriceList { get; set; }
+
+        public Guid FK_ItemId { get; set; }
+        [ForeignKey("FK_ItemId")]
+        public Item Item { get; set; }
+
+        public decimal Price { get; set; }
+
+        /// <summary>
+        /// Floor price for negotiation. Null = no negotiation allowed, Price is fixed.
+        /// Must be less than or equal to Price when set.
+        /// </summary>
+        public decimal? MinPrice { get; set; }
+    }
+}