API renames, change ref renderer to in renderer in IDrawable, make Layer implement IDrawable.

Source/Rendering/GlRenderer.cs

@@ -9,12 +9,19 @@ namespace DaggerFramework.Rendering
     public class GlRenderer : Renderer
     {
         public override Vector2 WindowSize => throw new NotImplementedException();
+        public override bool ShouldRun => throw new NotImplementedException();
 
         public override void Initialize(RendererSettings settings)
         {
 
         }
 
+        public override void CreateAndInitialize(WindowSettings windowSettings, RendererSettings renderSettings)
+        {
+            CreateWindow(windowSettings);
+            Initialize(renderSettings);
+        }
+
         public override void BeginFrame()
         {
             _glfw.PollEvents();
@@ -34,7 +41,7 @@ namespace DaggerFramework.Rendering
         }
 
         public override void CreateWindow(string title, Vector2 size) => CreateWindowUnsafe(title, size);
-        public override void CloseWindow()
+        public override void Shutdown()
         {
             CloseWindowUnsafe();
             _glfw.Terminate();