feature: updated folder structure

- moved files into folders to match their current namespace
- did not update any namespaces to maintain backward compatibility

src/PepperDash.Essentials.Core/InUseTracking/InUseTracking.cs

@@ -70,23 +70,7 @@ namespace PepperDash.Essentials.Core
 		}
 	}
 
-	/// <summary>
-	/// Wrapper for label/object pair representing in-use status.  Allows the same object to
-	/// register for in-use with different roles.
-	/// </summary>
-	public class InUseTrackingObject
-	{
-		public string Label { get; private set; }
-		public object User { get; private set; }
-
-		public InUseTrackingObject(object user, string label)
-		{
-			User = user;
-			Label = label;
-		}
-	}
-
-	//public class InUseEventArgs
+    //public class InUseEventArgs
 	//{
 	//    public int EventType { get; private set; }
 	//    public InUseTracking Tracker { get; private set; }

src/PepperDash.Essentials.Core/InUseTracking/InUseTrackingObject.cs

@@ -0,0 +1,18 @@
+namespace PepperDash.Essentials.Core
+{
+    /// <summary>
+    /// Wrapper for label/object pair representing in-use status.  Allows the same object to
+    /// register for in-use with different roles.
+    /// </summary>
+    public class InUseTrackingObject
+    {
+        public string Label { get; private set; }
+        public object User { get; private set; }
+
+        public InUseTrackingObject(object user, string label)
+        {
+            User  = user;
+            Label = label;
+        }
+    }
+}