fix: add some options to destination type enum

src/PepperDash.Essentials.Core/Devices/SourceListItem.cs

@@ -1,15 +1,7 @@
-
+using Newtonsoft.Json;
-
-using System;
-using System.Collections.Generic;
-using Crestron.SimplSharp;
-using Crestron.SimplSharp.CrestronIO;
-using Crestron.SimplSharpPro;
-
-using Newtonsoft.Json;
 using Newtonsoft.Json.Converters;
-using Newtonsoft.Json.Linq;
 using PepperDash.Core;
+using System.Collections.Generic;
 
 namespace PepperDash.Essentials.Core
 {
@@ -42,7 +34,8 @@ namespace PepperDash.Essentials.Core
                 return _SourceDevice;
             }
         }
-		Device _SourceDevice;
+
+        private Device _SourceDevice;
 
         /// <summary>
         /// Gets either the source's Name or this AlternateName property, if 
@@ -195,6 +188,10 @@ namespace PepperDash.Essentials.Core
         rightDisplay,
         centerDisplay,
         programAudio,
-        codecContent
+        codecContent,
+        frontLeftDisplay,
+        frontRightDisplay,
+        rearLeftDisplay,
+        rearRightDisplay,
     }
 }