Make it possible to feed in options to the Enumerate handler

Toolkit.Foundation/Enumerate.cs

@@ -1,3 +1,23 @@
 namespace Toolkit.Foundation;
 
-public record Enumerate<TValue>(object? Key = null);
+public record Enumerate<TValue> : IEnumerate
+{
+    public object? Key { get; init; }
+
+    public static Enumerate<TValue, TOptions> With<TOptions>(TOptions options) where TOptions : class
+    {
+        return new Enumerate<TValue, TOptions>(options);
+    }
+}
+
+public interface IEnumerate
+{
+    object? Key { get; init; }
+}
+
+
+public record Enumerate<TValue, TOptions>(TOptions? Options = null) : IEnumerate
+    where TOptions : class
+{
+    public object? Key { get; init; }
+}