Added Camera, Renderer, ... and moved example to sandbox

GlitchyEngine/src/Renderer/RendererAPI.bf

@@ -0,0 +1,22 @@
+using GlitchyEngine.Math;
+
+namespace GlitchyEngine.Renderer
+{
+	public class RendererAPI
+	{
+		public enum API
+		{
+			None,
+			D3D11
+		}
+
+		/**
+		 * Gets which graphics API is active.
+		 */
+		public static extern API Api { get; }
+
+		public extern void Clear(RenderTarget renderTarget, ColorRGBA clearColor);
+
+		public extern void DrawIndexed(GeometryBinding geometry);
+	}
+}