refactor: rearrange and add solution for 4-series

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

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Crestron.SimplSharp;
+
+using PepperDash.Core;
+
+namespace PepperDash.Essentials.Core
+{
+    public static class DeviceFeedbackExtensions
+    {
+        /// <summary>
+        /// Attempts to get and return a feedback property from a device by name.
+        /// If unsuccessful, returns null.
+        /// </summary>
+        /// <param name="device"></param>
+        /// <param name="propertyName"></param>
+        /// <returns></returns>
+        public static Feedback GetFeedbackProperty(this Device device, string propertyName)
+        {
+            var feedback = DeviceJsonApi.GetPropertyByName(device.Key, propertyName) as Feedback;
+
+            if (feedback != null)
+            {
+                return feedback;
+            }
+
+            return null;
+        }
+    }
+}