refactor: rearrange and add solution for 4-series

src/PepperDash.Essentials.Core/Device Info/DeviceInfo.cs

@@ -0,0 +1,11 @@
+namespace PepperDash.Essentials.Core.DeviceInfo
+{
+    public class DeviceInfo
+    {
+        public string HostName { get; set; } 
+        public string IpAddress { get; set; }
+        public string MacAddress { get; set; }
+        public string SerialNumber { get; set; }
+        public string FirmwareVersion { get; set; }
+    }
+}

src/PepperDash.Essentials.Core/Device Info/DeviceInfoEventArgs.cs

@@ -0,0 +1,19 @@
+using System;
+
+namespace PepperDash.Essentials.Core.DeviceInfo
+{
+    public class DeviceInfoEventArgs:EventArgs
+    {
+        public DeviceInfo DeviceInfo { get; set; }
+
+        public DeviceInfoEventArgs()
+        {
+            
+        }
+
+        public DeviceInfoEventArgs(DeviceInfo devInfo)
+        {
+            DeviceInfo = devInfo;
+        }
+    }
+}

src/PepperDash.Essentials.Core/Device Info/IDeviceInfoProvider.cs

@@ -0,0 +1,16 @@
+using System;
+using PepperDash.Core;
+
+namespace PepperDash.Essentials.Core.DeviceInfo
+{
+    public interface IDeviceInfoProvider:IKeyed
+    {
+        DeviceInfo DeviceInfo { get; }
+
+        event DeviceInfoChangeHandler DeviceInfoChanged;
+
+        void UpdateDeviceInfo();
+    }
+
+    public delegate void DeviceInfoChangeHandler(IKeyed device, DeviceInfoEventArgs args);
+}