Remove user_id.txt and add Microsoft.VisualBasic namespace to Todos model

Author: dean-journeyapps

demos/CommandLine/Models/Supabase/Todos.cs

@@ -1,4 +1,5 @@
 
+using Microsoft.VisualBasic;
 using Newtonsoft.Json;
 using Supabase.Postgrest.Attributes;
 using Supabase.Postgrest.Models;