Added the 'hellofastj' package

src/example/java/io/github/lucasstarsz/fastj/example/hellofastj/GameManager.java

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+package io.github.lucasstarsz.fastj.example.hellofastj;
+
+import io.github.lucasstarsz.fastj.example.hellofastj.scenes.MainScene;
+import io.github.lucasstarsz.fastj.example.helloworld.scenes.GameScene;
+import io.github.lucasstarsz.fastj.graphics.Display;
+import io.github.lucasstarsz.fastj.systems.control.SceneManager;
+
+import java.awt.*;
+
+public class GameManager extends SceneManager {
+    @Override
+    public void init(Display display) {
+        // Enables anti-aliasing for all objects in the game
+        display.modifyRenderSettings(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+
+        // Create a new instance of our scene
+        MainScene scene = new MainScene("Hello, FastJ!");
+
+        // Add the scene to the SceneManager
+        this.addScene(scene);
+
+        // Set the scene as the current scene
+        this.setCurrentScene(scene);
+
+        // Tell the logic manager to load our scene
+        this.loadCurrentScene();
+    }
+}

src/example/java/io/github/lucasstarsz/fastj/example/hellofastj/Main.java

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+package io.github.lucasstarsz.fastj.example.hellofastj;
+
+import io.github.lucasstarsz.fastj.engine.FastJEngine;
+
+public class Main {
+    public static void main(String[] args) {
+        // Initialize the FastJ Engine with a GameManager instance
+        FastJEngine.init("Hello, FastJ!", new GameManager());
+        FastJEngine.run(); // Run the game engine
+    }
+}

src/example/java/io/github/lucasstarsz/fastj/example/hellofastj/scenes/MainScene.java

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+package io.github.lucasstarsz.fastj.example.hellofastj.scenes;
+
+import io.github.lucasstarsz.fastj.graphics.Display;
+import io.github.lucasstarsz.fastj.systems.control.Scene;
+
+/* The main scene of our game. */
+public class MainScene extends Scene  {
+    public MainScene(String name) { super(name);}
+
+    @Override
+    public void load(Display display) {
+
+    }
+
+    @Override
+    public void unload(Display display) {
+
+    }
+
+    @Override
+    public void update(Display display) {
+
+    }
+}