Add unit tests for Router configuration and transport layers

- Implemented tests for RouterConfig, RoutingOptions, StaticInstanceConfig, and RouterConfigOptions to ensure default values are set correctly.
- Added tests for RouterConfigProvider to validate configurations and ensure defaults are returned when no file is specified.
- Created tests for ConfigValidationResult to check success and error scenarios.
- Developed tests for ServiceCollectionExtensions to verify service registration for RouterConfig.
- Introduced UdpTransportTests to validate serialization, connection, request-response, and error handling in UDP transport.
- Added scripts for signing authority gaps and hashing DevPortal SDK snippets.

src/__Libraries/StellaOps.Router.Transport.Tcp/TcpTransportOptions.cs

@@ -0,0 +1,68 @@
+using System.Net;
+
+namespace StellaOps.Router.Transport.Tcp;
+
+/// <summary>
+/// Configuration options for TCP transport.
+/// </summary>
+public sealed class TcpTransportOptions
+{
+    /// <summary>
+    /// Gets or sets the address to bind to.
+    /// Default: IPAddress.Any (0.0.0.0).
+    /// </summary>
+    public IPAddress BindAddress { get; set; } = IPAddress.Any;
+
+    /// <summary>
+    /// Gets or sets the port to listen on.
+    /// Default: 5100.
+    /// </summary>
+    public int Port { get; set; } = 5100;
+
+    /// <summary>
+    /// Gets or sets the receive buffer size.
+    /// Default: 64 KB.
+    /// </summary>
+    public int ReceiveBufferSize { get; set; } = 64 * 1024;
+
+    /// <summary>
+    /// Gets or sets the send buffer size.
+    /// Default: 64 KB.
+    /// </summary>
+    public int SendBufferSize { get; set; } = 64 * 1024;
+
+    /// <summary>
+    /// Gets or sets the keep-alive interval.
+    /// Default: 30 seconds.
+    /// </summary>
+    public TimeSpan KeepAliveInterval { get; set; } = TimeSpan.FromSeconds(30);
+
+    /// <summary>
+    /// Gets or sets the connection timeout.
+    /// Default: 10 seconds.
+    /// </summary>
+    public TimeSpan ConnectTimeout { get; set; } = TimeSpan.FromSeconds(10);
+
+    /// <summary>
+    /// Gets or sets the maximum number of reconnection attempts.
+    /// Default: 10.
+    /// </summary>
+    public int MaxReconnectAttempts { get; set; } = 10;
+
+    /// <summary>
+    /// Gets or sets the maximum reconnection backoff.
+    /// Default: 1 minute.
+    /// </summary>
+    public TimeSpan MaxReconnectBackoff { get; set; } = TimeSpan.FromMinutes(1);
+
+    /// <summary>
+    /// Gets or sets the maximum frame size in bytes.
+    /// Default: 16 MB.
+    /// </summary>
+    public int MaxFrameSize { get; set; } = 16 * 1024 * 1024;
+
+    /// <summary>
+    /// Gets or sets the host for client connections.
+    /// </summary>
+    public string? Host { get; set; }
+}