some more work on api

Pilz.Net/Api/ApiRequestInfo.cs

@@ -0,0 +1,9 @@
+using System.Diagnostics.CodeAnalysis;
+
+namespace Pilz.Net.Api;
+
+public record class ApiRequestInfo(
+    ApiMessage Message,
+    [property: MemberNotNullWhen(true, "AuthKey")]
+    bool IsAuthenticated,
+    string? AuthKey);