Add AuthLifetimeService

Refactor AuthManager

Akari.Prototype.Server/Models/TimedEntry.cs

@@ -0,0 +1,9 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Akari.Prototype.Server.Models
+{
+    public record TimedEntry<T>(DateTime CreationDate, T Value);
+}