feat: move MC into Essentials

In order to solve some dependency issues that keep cropping up, MC
should be moved back into the Essentials repo and loaded automatically
on startup. This will allow for all plugins that use the MC Messengers
library to use the same version without fear of overwriting a dll due to
loading of plugin libraries.

src/PepperDash.Essentials.MobileControl.Messengers/Messengers/ITemperatureSensorMessenger.cs

@@ -0,0 +1,61 @@
+using Newtonsoft.Json;
+using PepperDash.Core;
+using PepperDash.Essentials.Core.DeviceTypeInterfaces;
+using System;
+
+namespace PepperDash.Essentials.AppServer.Messengers
+{
+    public class ITemperatureSensorMessenger : MessengerBase
+    {
+        private readonly ITemperatureSensor device;
+
+        public ITemperatureSensorMessenger(string key, ITemperatureSensor device, string messagePath)
+            : base(key, messagePath, device as Device)
+        {
+            this.device = device;
+        }
+
+        protected override void RegisterActions()
+        {
+            base.RegisterActions();
+
+            AddAction("/fullStatus", (id, content) => SendFullStatus());
+
+            AddAction("/setTemperatureUnitsToCelcius", (id, content) =>
+            {
+                device.SetTemperatureFormat(true);
+            });
+
+            AddAction("/setTemperatureUnitsToFahrenheit", (id, content) =>
+            {
+                device.SetTemperatureFormat(false);
+            });
+
+            device.TemperatureFeedback.OutputChange += new EventHandler<Core.FeedbackEventArgs>((o, a) => SendFullStatus());
+            device.TemperatureInCFeedback.OutputChange += new EventHandler<Core.FeedbackEventArgs>((o, a) => SendFullStatus());
+        }
+
+        private void SendFullStatus()
+        {
+            // format the temperature to a string with one decimal place
+            var tempString = string.Format("{0}.{1}", device.TemperatureFeedback.UShortValue / 10, device.TemperatureFeedback.UShortValue % 10);
+
+            var state = new ITemperatureSensorStateMessage
+            {
+                Temperature = tempString,
+                TemperatureInCelsius = device.TemperatureInCFeedback.BoolValue
+            };
+
+            PostStatusMessage(state);
+        }
+    }
+
+    public class ITemperatureSensorStateMessage : DeviceStateMessageBase
+    {
+        [JsonProperty("temperature")]
+        public string Temperature { get; set; }
+
+        [JsonProperty("temperatureInCelsius")]
+        public bool TemperatureInCelsius { get; set; }
+    }
+}