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/ITechPasswordMessenger.cs

@@ -0,0 +1,95 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.Contracts;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Independentsoft.Json.Parser;
+using Newtonsoft.Json;
+using PepperDash.Core;
+using PepperDash.Essentials.Core;
+
+namespace PepperDash.Essentials.AppServer.Messengers
+{
+    public class ITechPasswordMessenger : MessengerBase
+    {
+        private readonly ITechPassword _room;
+
+        public ITechPasswordMessenger(string key, string messagePath, ITechPassword room)
+            : base(key, messagePath, room as Device)
+        {
+            _room = room;
+        }
+
+        protected override void RegisterActions()
+        {
+
+            AddAction("/status", (id, content) =>
+            {
+                SendFullStatus();
+            });
+
+            AddAction("/validateTechPassword", (id, content) =>
+            {
+                var password = content.Value<string>("password");
+
+                _room.ValidateTechPassword(password);
+            });
+
+            AddAction("/setTechPassword", (id, content) =>
+            {
+                var response = content.ToObject<SetTechPasswordContent>();
+
+                _room.SetTechPassword(response.OldPassword, response.NewPassword);
+            });
+
+            _room.TechPasswordChanged += (sender, args) =>
+            {
+                PostEventMessage("passwordChangedSuccessfully");
+            };
+
+            _room.TechPasswordValidateResult += (sender, args) =>
+            {
+                var evt = new ITechPasswordEventMessage
+                {
+                    IsValid = args.IsValid
+                };
+
+                PostEventMessage(evt, "passwordValidationResult");
+            };
+        }
+
+        private void SendFullStatus()
+        {
+            var status = new ITechPasswordStateMessage
+            {
+                TechPasswordLength = _room.TechPasswordLength
+            };
+
+            PostStatusMessage(status);
+        }
+
+    }
+
+    public class ITechPasswordStateMessage : DeviceStateMessageBase
+    {
+        [JsonProperty("techPasswordLength", NullValueHandling = NullValueHandling.Ignore)]
+        public int? TechPasswordLength { get; set; }
+    }
+
+    public class ITechPasswordEventMessage : DeviceEventMessageBase
+    {
+        [JsonProperty("isValid", NullValueHandling = NullValueHandling.Ignore)]
+        public bool? IsValid { get; set; }
+    }
+    
+    class SetTechPasswordContent
+    {
+        [JsonProperty("oldPassword")]
+        public string OldPassword { get; set; }
+
+        [JsonProperty("newPassword")]
+        public string NewPassword { get; set; }
+    }
+
+}