Fixes printing log messages outside of the request scope. Closes #1205 (#1209)

Author: waldekmastykarz

dev-proxy/Logging/LogEntry.cs

@@ -0,0 +1,28 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Microsoft.Extensions.Logging.Abstractions;
+
+namespace DevProxy.Logging;
+
+readonly struct LogEntry
+{
+    public LogLevel LogLevel { get; init; }
+    public string Category { get; init; }
+    public EventId EventId { get; init; }
+    public string? Message { get; init; }
+    public Exception? Exception { get; init; }
+
+    public static LogEntry FromLogEntry<TState>(LogEntry<TState> logEntry)
+    {
+        return new()
+        {
+            LogLevel = logEntry.LogLevel,
+            Category = logEntry.Category,
+            EventId = logEntry.EventId,
+            Message = logEntry.Formatter(logEntry.State, logEntry.Exception),
+            Exception = logEntry.Exception
+        };
+    }
+}