Refactor & More.

Changed the entity system to utilize mix-ins.

Added instanced sprites.

Texture support.

src/Game/Entities/Box.cpp

@@ -1,4 +1,6 @@
-#include <Game/Entity/Box.h>
+#include <Game/entity/Box.h>
+#include <Engine/Globals.h>
+#include <JGL/JGL.h>
 
 void Game::Box::Render() {
     J2D::FillRect(Colors::Red, Vector2(position), {20, 20});
@@ -13,4 +15,4 @@ void Game::Box::Update() {
         MoveX(-500);
     if (Globals::Window->IsKeyDown(Keys::D))
         MoveX(500);
-    }
+}