Add XML documentation across gateway, worker, and .NET client

src/MxGateway.Server/Configuration/GatewayOptions.cs

@@ -4,15 +4,33 @@ public sealed class GatewayOptions
 {
     public const string SectionName = "MxGateway";
 
+    /// <summary>
+    /// Gets authentication configuration options.
+    /// </summary>
     public AuthenticationOptions Authentication { get; init; } = new();
 
+    /// <summary>
+    /// Gets worker process configuration options.
+    /// </summary>
     public WorkerOptions Worker { get; init; } = new();
 
+    /// <summary>
+    /// Gets session management configuration options.
+    /// </summary>
     public SessionOptions Sessions { get; init; } = new();
 
+    /// <summary>
+    /// Gets event stream configuration options.
+    /// </summary>
     public EventOptions Events { get; init; } = new();
 
+    /// <summary>
+    /// Gets dashboard configuration options.
+    /// </summary>
     public DashboardOptions Dashboard { get; init; } = new();
 
+    /// <summary>
+    /// Gets protocol configuration options.
+    /// </summary>
     public ProtocolOptions Protocol { get; init; } = new();
 }