chore: add room configs back in

At the moment, MC relies on some of these classes, so they are necessary
in Essentials for now. We can explore how to remove them at a later date

src/PepperDash.Essentials.Core/Room/Config/EssentialsTechRoomConfig.cs

@@ -0,0 +1,77 @@
+
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using PepperDash.Essentials.Room.Config;
+
+namespace PDT.Plugins.Essentials.Rooms.Config
+{
+    public class EssentialsTechRoomConfig
+    {
+        /// <summary>
+        /// The key of the dummy device used to enable routing
+        /// </summary>
+        [JsonProperty("dummySourceKey")]
+        public string DummySourceKey { get; set; }
+
+        /// <summary>
+        /// The keys of the displays assigned to this room
+        /// </summary>
+        [JsonProperty("displays")]
+        public List<string> Displays { get; set; }
+        
+        /// <summary>
+        /// The keys of the tuners assinged to this room
+        /// </summary>
+        [JsonProperty("tuners")]
+        public List<string> Tuners { get; set; }
+
+        /// <summary>
+        /// PIN to access the room as a normal user
+        /// </summary>
+        [JsonProperty("userPin")]
+        public string UserPin { get; set; }
+
+        /// <summary>
+        /// PIN to access the room as a tech user
+        /// </summary>
+        [JsonProperty("techPin")]
+        public string TechPin { get; set; }
+
+        /// <summary>
+        /// Name of the presets file.  Path prefix is assumed to be /html/presets/lists/
+        /// </summary>
+        [JsonProperty("presetsFileName")]
+        public string PresetsFileName { get; set; }
+
+        [JsonProperty("scheduledEvents")]
+        public List<ScheduledEventConfig> ScheduledEvents { get; set; }
+
+        /// <summary>
+        /// Indicates that the room is the primary when true
+        /// </summary>
+        [JsonProperty("isPrimary")]
+        public bool IsPrimary { get; set; }
+
+        /// <summary>
+        /// Indicates which tuners should mirror preset recall when two rooms are configured in a primary->secondary scenario
+        /// </summary>
+        [JsonProperty("mirroredTuners")]
+        public Dictionary<uint, string> MirroredTuners { get; set; }
+
+        [JsonProperty("helpMessage")]
+        public string HelpMessage { get; set; }
+
+        /// <summary>
+        /// Indicates the room 
+        /// </summary>
+        [JsonProperty("isTvPresetsProvider")] 
+        public bool IsTvPresetsProvider;
+
+        public EssentialsTechRoomConfig()
+        {
+            Displays = new List<string>();
+            Tuners = new List<string>();
+            ScheduledEvents = new List<ScheduledEventConfig>();
+        }
+    }
+}