docs: add xml comments for Essentials routing

src/PepperDash.Essentials.Core/Routing/TieLineConfig.cs

@@ -1,6 +1,4 @@
-
-
-using System;
+using System;
 using System.Collections.Generic;
 using Crestron.SimplSharp;
 using Crestron.SimplSharp.CrestronIO;
@@ -15,15 +13,44 @@ using Serilog.Events;
 
 namespace PepperDash.Essentials.Core.Config
 {
+	/// <summary>
+	/// Represents the configuration data for a single tie line between two routing ports.
+	/// </summary>
 	public class TieLineConfig
 	{
+		/// <summary>
+		/// The key of the source device.
+		/// </summary>
 		public string SourceKey { get; set; }
+		
+		/// <summary>
+		/// The key of the source card (if applicable, e.g., in a modular chassis).
+		/// </summary>
 		public string SourceCard { get; set; }
+		
+		/// <summary>
+		/// The key of the source output port.
+		/// </summary>
 		public string SourcePort { get; set; }
+		
+		/// <summary>
+		/// The key of the destination device.
+		/// </summary>
 		public string DestinationKey { get; set; }
+		
+		/// <summary>
+		/// The key of the destination card (if applicable).
+		/// </summary>
 		public string DestinationCard { get; set; }
+		
+		/// <summary>
+		/// The key of the destination input port.
+		/// </summary>
 		public string DestinationPort { get; set; }
 
+        /// <summary>
+        /// Optional override for the signal type of the tie line. If set, this overrides the destination port's type for routing calculations.
+        /// </summary>
         [JsonProperty("type", NullValueHandling = NullValueHandling.Ignore)]
         [JsonConverter(typeof(StringEnumConverter))]
         public eRoutingSignalType? OverrideType { get; set; }
@@ -73,11 +100,19 @@ namespace PepperDash.Essentials.Core.Config
 			return new TieLine(sourceOutputPort, destinationInputPort, OverrideType);
 		}
 
+		/// <summary>
+		/// Logs an error message related to creating this tie line configuration.
+		/// </summary>
+		/// <param name="msg">The specific error message.</param>
 		void LogError(string msg)
 		{
 			Debug.LogMessage(LogEventLevel.Error, "WARNING: Cannot create tie line: {message}:\r   {tieLineConfig}",null, msg, this);
 		}
 
+		/// <summary>
+		/// Returns a string representation of the tie line configuration.
+		/// </summary>
+		/// <returns>A string describing the source and destination of the configured tie line.</returns>
 		public override string ToString()
 		{
 			return string.Format("{0}.{1}.{2} --> {3}.{4}.{5}", SourceKey, SourceCard, SourcePort,