Core - Added the ability to change graphics context at runtime

Settings - Added setting for switching between software-based and Vulkan-based rendering

src/Artemis.Core/SkiaSharp/IManagedGraphicsContext.cs

@@ -0,0 +1,16 @@
+using System;
+using SkiaSharp;
+
+namespace Artemis.Core.SkiaSharp
+{
+    /// <summary>
+    ///     Represents a managed wrapper around a SkiaSharp context
+    /// </summary>
+    public interface IManagedGraphicsContext : IDisposable
+    {
+        /// <summary>
+        ///     Gets the graphics context created by this wrapper
+        /// </summary>
+        GRContext GraphicsContext { get; }
+    }
+}