Logging 6 (#1691)

* Refactor logging to use structured logging patterns for Windows media

Update all logging statements to use structured logging with named placeholders and argument lists. Add logger.IsEnabled checks to guard value processing. Change logger in WindowsAudioEndPoint to static. Refactor video format logging in WindowsVideoEndPoint to only run when debug logging is enabled and use structured logging.

* Refactor logging to use structured log messages in OpenAI real time

Updated all log statements to use structured logging with named placeholders instead of interpolated strings. Added structured logging for data channel message payloads and removed direct JSON logging. These changes enhance log readability and facilitate better log analysis.

Author: paulomorgado

src/SIPSorcery.OpenAI.Realtime/WebRTC/WebRTCEndPoint.cs

@@ -134,19 +134,19 @@ private RTCPeerConnection CreatePeerConnection(RTCConfiguration? pcConfig)
         // This call is synchronous when the WebRTC connection is not yet connected.
         var dataChannel = pc.createDataChannel(OPENAI_DATACHANNEL_NAME).Result;
 
-        pc.onconnectionstatechange += state => _logger.LogDebug($"Peer connection connected changed to {state}.");
-        pc.OnTimeout += mediaType => _logger.LogDebug($"Timeout on media {mediaType}.");
-        pc.oniceconnectionstatechange += state => _logger.LogDebug($"ICE connection state changed to {state}.");
+        pc.onconnectionstatechange += state => _logger.LogDebug("Peer connection state changed to {ConnectionState}.", state);
+        pc.OnTimeout += mediaType => _logger.LogDebug("Timeout on media {MediaType}.", mediaType);
+        pc.oniceconnectionstatechange += state => _logger.LogDebug("ICE connection state changed to {IceConnectionState}.", state);
 
         pc.onsignalingstatechange += () =>
         {
             if (pc.signalingState == RTCSignalingState.have_local_offer)
             {
-                _logger.LogTrace($"Local SDP:\n{pc.localDescription.sdp}");
+                _logger.LogTrace("Local SDP:\n{LocalSdp}", pc.localDescription.sdp);
             }
             else if (pc.signalingState is RTCSignalingState.have_remote_offer or RTCSignalingState.stable)
             {
-                _logger.LogTrace($"Remote SDP:\n{pc.remoteDescription?.sdp}");
+                _logger.LogTrace("Remote SDP:\n{RemoteSdp}", pc.remoteDescription?.sdp);
             }
         };
 
@@ -197,10 +197,13 @@ public void SendDataChannelMessage(RealtimeEventBase message)
                     return;
                 }
 
-                _logger.LogDebug($"Sending initial response create to first call data channel {dc.label}.");
-                _logger.LogTrace(message.ToJson());
+                _logger.LogDebug("Sending initial response create to first call data channel {DataChannelLabel}.", dc.label);
 
-                dc.send(message.ToJson());
+                var messageJson = message.ToJson();
+
+                _logger.LogTrace("Data channel message payload: {MessageJson}", messageJson);
+
+                dc.send(messageJson);
             },
             () => _logger.LogError("No peer connection available to send data channel message.")
         );