Enable testing of ASP.net MVC controllers

Controller properties have all kinds of validations in the background.
In general, we don't user properties on our Controllers, so the easiest
way to allow for Autofixture-based testing of our Controllers is to just
omit setting all properties on them.

test/Common/AutoFixture/Attributes/BitCustomizeAttribute.cs

@@ -0,0 +1,22 @@
+using System;
+using AutoFixture;
+
+namespace Bit.Test.Common.AutoFixture.Attributes
+{
+    /// <summary>
+    /// <para>
+    ///     Base class for customizing parameters in methods decorated with the
+    ///     Bit.Test.Common.AutoFixture.Attributes.MemberAutoDataAttribute.
+    /// </para>
+    /// ⚠ Warning ⚠ Will not insert customizations into AutoFixture's AutoDataAttribute build chain
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method | AttributeTargets.Parameter, AllowMultiple = true)]
+    public abstract class BitCustomizeAttribute : Attribute
+    {
+        /// <summary>
+        /// /// Gets a customization for the method's parameters.
+        /// </summary>
+        /// <returns>A customization for the method's paramters.</returns>
+        public abstract ICustomization GetCustomization();
+    }
+}