feat: add auth fields to ServerInfo and ClientOptions protocol types

src/NATS.Server/Protocol/NatsProtocol.cs

@@ -26,6 +26,10 @@ public static class NatsProtocol
     public const string ErrMaxPayloadViolation = "Maximum Payload Violation";
     public const string ErrInvalidPublishSubject = "Invalid Publish Subject";
     public const string ErrInvalidSubject = "Invalid Subject";
+    public const string ErrAuthorizationViolation = "Authorization Violation";
+    public const string ErrAuthTimeout = "Authentication Timeout";
+    public const string ErrPermissionsPublish = "Permissions Violation for Publish";
+    public const string ErrPermissionsSubscribe = "Permissions Violation for Subscription";
 }
 
 public sealed class ServerInfo
@@ -61,6 +65,14 @@ public sealed class ServerInfo
     [JsonPropertyName("client_ip")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public string? ClientIp { get; set; }
+
+    [JsonPropertyName("auth_required")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+    public bool AuthRequired { get; set; }
+
+    [JsonPropertyName("nonce")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+    public string? Nonce { get; set; }
 }
 
 public sealed class ClientOptions
@@ -91,4 +103,19 @@ public sealed class ClientOptions
 
     [JsonPropertyName("no_responders")]
     public bool NoResponders { get; set; }
+
+    [JsonPropertyName("user")]
+    public string? Username { get; set; }
+
+    [JsonPropertyName("pass")]
+    public string? Password { get; set; }
+
+    [JsonPropertyName("auth_token")]
+    public string? Token { get; set; }
+
+    [JsonPropertyName("nkey")]
+    public string? Nkey { get; set; }
+
+    [JsonPropertyName("sig")]
+    public string? Sig { get; set; }
 }