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/RoomEventScheduleMessenger.cs

@@ -0,0 +1,80 @@
+using Newtonsoft.Json;
+using PepperDash.Core;
+using PepperDash.Essentials.Core;
+using PepperDash.Essentials.Core.DeviceTypeInterfaces;
+using PepperDash.Essentials.Room.Config;
+using System;
+using System.Collections.Generic;
+
+namespace PepperDash.Essentials.AppServer.Messengers
+{
+    public class RoomEventScheduleMessenger : MessengerBase
+    {
+        private readonly IRoomEventSchedule _room;
+
+
+        public RoomEventScheduleMessenger(string key, string messagePath, IRoomEventSchedule room)
+            : base(key, messagePath, room as Device)
+        {
+            _room = room;
+        }
+
+        #region Overrides of MessengerBase
+
+#if SERIES4
+        protected override void RegisterActions()
+#else
+        protected override void CustomRegisterWithAppServer(MobileControlSystemController appServerController)
+#endif
+        {
+            AddAction("/saveScheduledEvents", (id, content) => SaveScheduledEvents(content.ToObject<List<ScheduledEventConfig>>()));
+            AddAction("/status", (id, content) =>
+            {
+                var events = _room.GetScheduledEvents();
+
+                SendFullStatus(events);
+            });
+
+            _room.ScheduledEventsChanged += (sender, args) => SendFullStatus(args.ScheduledEvents);
+        }
+
+        #endregion
+
+        private void SaveScheduledEvents(List<ScheduledEventConfig> events)
+        {
+            foreach (var evt in events)
+            {
+                SaveScheduledEvent(evt);
+            }
+        }
+
+        private void SaveScheduledEvent(ScheduledEventConfig eventConfig)
+        {
+            try
+            {
+                _room.AddOrUpdateScheduledEvent(eventConfig);
+            }
+            catch (Exception ex)
+            {
+                Debug.Console(0, this, "Exception saving event: {0}\r\n{1}", ex.Message, ex.StackTrace);
+            }
+        }
+
+        private void SendFullStatus(List<ScheduledEventConfig> events)
+        {
+
+            var message = new RoomEventScheduleStateMessage
+            {
+                ScheduleEvents = events,
+            };
+
+            PostStatusMessage(message);
+        }
+    }
+
+    public class RoomEventScheduleStateMessage : DeviceStateMessageBase
+    {
+        [JsonProperty("scheduleEvents")]
+        public List<ScheduledEventConfig> ScheduleEvents { get; set; }
+    }
+}