Add pre-testing version of the webinterface

ChatTwo/Util/WebinterfaceUtil.cs

@@ -0,0 +1,11 @@
+namespace ChatTwo.Util;
+
+public class WebinterfaceUtil
+{
+    private static readonly Random Rng = new();
+
+    public static string GenerateSimpleAuthCode()
+    {
+        return (100000 + Rng.Next() % 100000).ToString()[1..];
+    }
+}