Adds DmChassicControllerBridge. Created JoinMapBase base class

PepperDashEssentials/Bridges/JoinMapBase.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Crestron.SimplSharp;
+
+namespace PepperDash.Essentials.Bridges
+{
+    public static class JoinMapHelper
+    {
+        /// <summary>
+        /// Attempts to get the join map from config
+        /// </summary>
+        /// <param name="joinMapKey"></param>
+        /// <returns></returns>
+        public static JoinMapBase GetJoinMapForDevice(string joinMapKey)
+        {
+            if (!string.IsNullOrEmpty(joinMapKey))
+                return null;
+
+            // FUTURE TODO: Get the join map from the ConfigReader.ConfigObject 
+
+            return null;
+        }
+    }
+
+
+    public abstract class JoinMapBase
+    {
+        /// <summary>
+        /// Modifies all the join numbers by adding the offset.  This should never be called twice
+        /// </summary>
+        /// <param name="joinStart"></param>
+        public abstract void OffsetJoinNumbers(uint joinStart);
+
+
+    }
+
+
+}