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/SIMPLAtcMessenger.cs

@@ -0,0 +1,163 @@
+using Crestron.SimplSharpPro.DeviceSupport;
+using Newtonsoft.Json.Linq;
+using PepperDash.Essentials.Core;
+using PepperDash.Essentials.Core.DeviceTypeInterfaces;
+using PepperDash.Essentials.Devices.Common.Codec;
+using System;
+using System.Collections.Generic;
+
+namespace PepperDash.Essentials.AppServer.Messengers
+{
+    // ReSharper disable once InconsistentNaming
+    public class SIMPLAtcMessenger : MessengerBase
+    {
+        private readonly BasicTriList _eisc;
+
+        public SIMPLAtcJoinMap JoinMap { get; private set; }
+
+
+        /// <summary>
+        /// 
+        /// </summary>
+        private readonly CodecActiveCallItem _currentCallItem;
+
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="key"></param>
+        /// <param name="eisc"></param>
+        /// <param name="messagePath"></param>
+        public SIMPLAtcMessenger(string key, BasicTriList eisc, string messagePath)
+            : base(key, messagePath)
+        {
+            _eisc = eisc;
+
+            JoinMap = new SIMPLAtcJoinMap(201);
+
+            _currentCallItem = new CodecActiveCallItem { Type = eCodecCallType.Audio, Id = "-audio-" };
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        private void SendFullStatus()
+        {
+            PostStatusMessage(JToken.FromObject(new
+                {
+                    calls = GetCurrentCallList(),
+                    currentCallString = _eisc.GetString(JoinMap.CurrentCallName.JoinNumber),
+                    currentDialString = _eisc.GetString(JoinMap.CurrentDialString.JoinNumber),
+                    isInCall = _eisc.GetString(JoinMap.HookState.JoinNumber) == "Connected"
+                })
+            );
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="appServerController"></param>
+#if SERIES4
+        protected override void RegisterActions()
+#else
+        protected override void CustomRegisterWithAppServer(MobileControlSystemController appServerController)
+#endif
+        {
+            //EISC.SetStringSigAction(SCurrentDialString, s => PostStatusMessage(new { currentDialString = s }));
+
+            _eisc.SetStringSigAction(JoinMap.HookState.JoinNumber, s =>
+            {
+                _currentCallItem.Status = (eCodecCallStatus)Enum.Parse(typeof(eCodecCallStatus), s, true);
+                //GetCurrentCallList();
+                SendFullStatus();
+            });
+
+            _eisc.SetStringSigAction(JoinMap.CurrentCallNumber.JoinNumber, s =>
+            {
+                _currentCallItem.Number = s;
+                SendCallsList();
+            });
+
+            _eisc.SetStringSigAction(JoinMap.CurrentCallName.JoinNumber, s =>
+            {
+                _currentCallItem.Name = s;
+                SendCallsList();
+            });
+
+            _eisc.SetStringSigAction(JoinMap.CallDirection.JoinNumber, s =>
+            {
+                _currentCallItem.Direction = (eCodecCallDirection)Enum.Parse(typeof(eCodecCallDirection), s, true);
+                SendCallsList();
+            });
+
+            // Add press and holds using helper
+            //Action<string, uint> addPhAction = (s, u) => 
+            //    AppServerController.AddAction(MessagePath + s, new PressAndHoldAction(b => _eisc.SetBool(u, b)));
+
+            // Add straight pulse calls
+            void addAction(string s, uint u) =>
+                AddAction(s, (id, content) => _eisc.PulseBool(u, 100));
+            addAction("/endCallById", JoinMap.EndCall.JoinNumber);
+            addAction("/endAllCalls", JoinMap.EndCall.JoinNumber);
+            addAction("/acceptById", JoinMap.IncomingAnswer.JoinNumber);
+            addAction("/rejectById", JoinMap.IncomingReject.JoinNumber);
+
+            var speeddialStart = JoinMap.SpeedDialStart.JoinNumber;
+            var speeddialEnd = JoinMap.SpeedDialStart.JoinNumber + JoinMap.SpeedDialStart.JoinSpan;
+
+            var speedDialIndex = 1;
+            for (uint i = speeddialStart; i < speeddialEnd; i++)
+            {
+                addAction(string.Format("/speedDial{0}", speedDialIndex), i);
+                speedDialIndex++;
+            }
+
+            // Get status
+            AddAction("/fullStatus", (id, content) => SendFullStatus());
+            // Dial on string
+            AddAction("/dial",
+                (id, content) =>
+                {
+                    var msg = content.ToObject<MobileControlSimpleContent<string>>();
+                    _eisc.SetString(JoinMap.CurrentDialString.JoinNumber, msg.Value);
+                });
+            // Pulse DTMF
+            AddAction("/dtmf", (id, content) =>
+            {
+                var s = content.ToObject<MobileControlSimpleContent<string>>();
+
+                var join = JoinMap.Joins[s.Value];
+                if (join != null)
+                {
+                    if (join.JoinNumber > 0)
+                    {
+                        _eisc.PulseBool(join.JoinNumber, 100);
+                    }
+                }
+            });
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        private void SendCallsList()
+        {
+            PostStatusMessage(JToken.FromObject(new
+                {
+                    calls = GetCurrentCallList(),
+                })
+            );
+        }
+
+        /// <summary>
+        /// Turns the 
+        /// </summary>
+        /// <returns></returns>
+        private List<CodecActiveCallItem> GetCurrentCallList()
+        {
+            return _currentCallItem.Status == eCodecCallStatus.Disconnected
+                ? new List<CodecActiveCallItem>()
+                : new List<CodecActiveCallItem> { _currentCallItem };
+        }
+    }
+}