⛏ Create Guid Generator

This generator will uses when row insert set PK

src/IronHook.EntityFrameworkCore/Generators/GuidGenerator.cs

@@ -0,0 +1,23 @@
+using Microsoft.EntityFrameworkCore.ChangeTracking;
+using Microsoft.EntityFrameworkCore.ValueGeneration;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace IronHook.EntityFrameworkCore.Generators
+{
+    /// <summary>
+    /// Guid value generator for primary key.
+    /// </summary>
+    public class GuidGenerator : ValueGenerator
+    {
+        public override bool GeneratesTemporaryValues => false;
+
+        protected override object NextValue(EntityEntry entry)
+        {
+            return Guid.NewGuid();
+        }
+    }
+}