Added session caching for user validation to reduce db calls and introduced configurable session options.

Moonlight.Api/Startup/Startup.Base.cs

@@ -29,6 +29,9 @@ public partial class Startup
         builder.Services.AddSingleton<DiagnoseService>();
 
         builder.Services.AddSingleton<IDiagnoseProvider, UpdateDiagnoseProvider>();
+        
+        builder.Services.AddMemoryCache();
+        builder.Services.AddOptions<SessionOptions>().BindConfiguration("Moonlight:Session");
     }
 
     private static void UseBase(WebApplication application)