feat(FakerExtensions.cs): add FakerExtensions class with UsePrivateConstructor method

tests/Shop.IntegrationTests/Extensions/FakerExtensions.cs

@@ -0,0 +1,10 @@
+using System;
+using Bogus;
+
+namespace Shop.IntegrationTests.Extensions;
+
+internal static class FakerExtensions
+{
+    public static Faker<T> UsePrivateConstructor<T>(this Faker<T> faker) where T : class =>
+        faker.CustomInstantiator(_ => Activator.CreateInstance(typeof(T), nonPublic: true) as T);
+}