feat: add WebSocketOptions configuration class

tests/NATS.Server.Tests/WebSocket/WebSocketOptionsTests.cs

@@ -0,0 +1,26 @@
+using Shouldly;
+
+namespace NATS.Server.Tests.WebSocket;
+
+public class WebSocketOptionsTests
+{
+    [Fact]
+    public void DefaultOptions_PortIsZero_Disabled()
+    {
+        var opts = new WebSocketOptions();
+        opts.Port.ShouldBe(0);
+        opts.Host.ShouldBe("0.0.0.0");
+        opts.Compression.ShouldBeFalse();
+        opts.NoTls.ShouldBeFalse();
+        opts.HandshakeTimeout.ShouldBe(TimeSpan.FromSeconds(2));
+        opts.AuthTimeout.ShouldBe(TimeSpan.FromSeconds(2));
+    }
+
+    [Fact]
+    public void NatsOptions_HasWebSocketProperty()
+    {
+        var opts = new NatsOptions();
+        opts.WebSocket.ShouldNotBeNull();
+        opts.WebSocket.Port.ShouldBe(0);
+    }
+}