Reimplemented Renderer2D

- Renderer2D now static
- Renderer now calls Init and Deinit of Renderer2D
- Renderer2D  now calls Init and Deinit of FontRenderer
- Fixed Deinit order of Layers and renderer (e.g. Layers now deinit first)
- Sandbox2D now uses SandboxApp (only loads different layer)

GlitchyEngine/src/Application.bf

@@ -16,11 +16,11 @@ namespace GlitchyEngine
 		private bool _running = true;
 		private bool _isMinimized = false;
 
-		private LayerStack _layerStack = new LayerStack() ~ delete _;
+		private LayerStack _layerStack = new LayerStack();
 
 		private ImGuiLayer _imGuiLayer;
 
-		private GameTime _gameTime = new GameTime(true) ~ delete _;
+		private GameTime _gameTime = new GameTime(true);
 
 		public bool IsRunning => _running;
 		public Window Window => _window;
@@ -57,7 +57,10 @@ namespace GlitchyEngine
 
 		public ~this()
 		{
+			delete _layerStack;
 			SamplerStateManager.Uninit();
+			Renderer.Deinit();
+			delete _gameTime;
 		}
 
 		public void OnEvent(Event e)