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/ICommunicationMonitorMessenger.cs

@@ -0,0 +1,79 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using Newtonsoft.Json.Linq;
+using PepperDash.Core;
+using PepperDash.Essentials.Core;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PepperDash.Essentials.AppServer.Messengers
+{
+    public class ICommunicationMonitorMessenger : MessengerBase
+    {
+        private readonly ICommunicationMonitor _communicationMonitor;
+
+        public ICommunicationMonitorMessenger(string key, string messagePath, ICommunicationMonitor device) : base(key, messagePath, device as IKeyName)
+        {
+            _communicationMonitor = device;
+        }
+
+        protected override void RegisterActions()
+        {
+            base.RegisterActions();
+
+            AddAction("/fullStatus", (id, content) => 
+            {
+                PostStatusMessage(new CommunicationMonitorState
+                {
+                    CommunicationMonitor = new CommunicationMonitorProps
+                    {
+                        IsOnline = _communicationMonitor.CommunicationMonitor.IsOnline,
+                        Status = _communicationMonitor.CommunicationMonitor.Status
+                    }
+                }); 
+            });
+
+            _communicationMonitor.CommunicationMonitor.StatusChange += (sender, args) =>
+            {
+                PostStatusMessage(JToken.FromObject(new
+                {
+                    commMonitor = new CommunicationMonitorProps
+                    {
+                        IsOnline = _communicationMonitor.CommunicationMonitor.IsOnline,
+                        Status = _communicationMonitor.CommunicationMonitor.Status
+                    }
+                }));
+            };
+        }
+    }
+
+    /// <summary>
+    /// Represents the state of the communication monitor
+    /// </summary>
+    public class CommunicationMonitorState : DeviceStateMessageBase
+    {
+        [JsonProperty("commMonitor", NullValueHandling = NullValueHandling.Ignore)]
+        public CommunicationMonitorProps CommunicationMonitor { get; set; }
+
+    }
+
+    public class CommunicationMonitorProps
+    {        /// <summary>
+             /// For devices that implement ICommunicationMonitor, reports the online status of the device
+             /// </summary>
+        [JsonProperty("isOnline", NullValueHandling = NullValueHandling.Ignore)]
+        public bool? IsOnline { get; set; }
+
+        /// <summary>
+        /// For devices that implement ICommunicationMonitor, reports the online status of the device
+        /// </summary>
+        [JsonProperty("status", NullValueHandling = NullValueHandling.Ignore)]
+        [JsonConverter(typeof(StringEnumConverter))]
+        public MonitorStatus Status { get; set; }
+
+    }
+
+}