Added a layer of abstraction between RGB.NET and Artemis

This means Artemis can add extra functionality
It also avoid having to reference RGB.NET for basic rendering
Implemented rendering scaling

src/Artemis.Core/Services/Interfaces/IArtemisService.cs

@@ -1,5 +1,8 @@
 namespace Artemis.Core.Services.Interfaces
 {
+    /// <summary>
+    ///     A singleton service
+    /// </summary>
     public interface IArtemisService
     {
     }

src/Artemis.Core/Services/Interfaces/IProtectedArtemisService.cs

@@ -0,0 +1,9 @@
+namespace Artemis.Core.Services.Interfaces
+{
+    /// <summary>
+    ///     A singleton service that cannot be used by plugins
+    /// </summary>
+    public interface IProtectedArtemisService
+    {
+    }
+}