refactor: move routing interfaces into their own files

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

@@ -0,0 +1,30 @@
+namespace PepperDash.Essentials.Core
+{
+    /// <summary>
+    /// A RoutingInputPort for devices like DM-TX and DM input cards. 
+    /// Will provide video statistics on connected signals
+    /// </summary>
+    public class RoutingInputPortWithVideoStatuses : RoutingInputPort
+	{
+		/// <summary>
+		/// Video statuses attached to this port
+		/// </summary>
+		public VideoStatusOutputs VideoStatus { get; private set; }
+
+		/// <summary>
+		/// Constructor 
+		/// </summary>
+		/// <param name="selector">An object used to refer to this port in the IRouting device's ExecuteSwitch method.
+		/// May be string, number, whatever</param>
+		/// <param name="parent">The IRoutingInputs object this lives on</param>
+		/// <param name="funcs">A VideoStatusFuncsWrapper used to assign the callback funcs that will get 
+		/// the values for the various stats</param>
+		public RoutingInputPortWithVideoStatuses(string key, 
+			eRoutingSignalType type, eRoutingPortConnectionType connType, object selector, 
+			IRoutingInputs parent, VideoStatusFuncsWrapper funcs) :
+			base(key, type, connType, selector, parent)
+		{
+			VideoStatus = new VideoStatusOutputs(funcs);		
+		}
+	}
+}