Made devices disposable

RGB.NET.Core/Devices/AbstractRGBDevice.cs

@@ -87,6 +87,12 @@ namespace RGB.NET.Core
             UpdateLeds(ledsToUpdate);
         }
 
+        /// <inheritdoc />
+        public virtual void Dispose()
+        {
+            LedMapping.Clear();
+        }
+
         /// <summary>
         /// Performs device specific updates.
         /// </summary>

RGB.NET.Core/Devices/IRGBDevice.cs

@@ -1,11 +1,12 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 
 namespace RGB.NET.Core
 {
     /// <summary>
     /// Represents a generic RGB-device
     /// </summary>
-    public interface IRGBDevice : IEnumerable<Led>, IBindable
+    public interface IRGBDevice : IEnumerable<Led>, IBindable, IDisposable
     {
         #region Properties