Organize game files into their project directory and ensure proper build configuration

Moves all game source files and assets into the 'American-Identity-Project' directory and updates the manifest to point to the 'Display' class as the main entry point.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: f6819c21-e85d-45ac-acde-604db2cfa4fe
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: a9500e48-7f68-408f-a5c6-28df9f59fe00
Replit-Helium-Checkpoint-Created: true

American-Identity-Project/PowerBrick.java

@@ -0,0 +1,24 @@
+import java.util.*;
+import javax.swing.ImageIcon;
+
+public class PowerBrick extends Tile {
+  int id;
+  boolean hit;
+
+  public PowerBrick(int x, int y, int w, int h, int id) {
+    super(x, y, w, h, new ImageIcon("Sprites/Bricks/PowerBrick.png"));
+    this.id = id;
+    hit = false;
+  }
+
+  public void spawnPower(ArrayList<Collectable> powerups) {
+    this.icon = new ImageIcon("Sprites/Bricks/EmptyBrick.png");
+    hit = true;
+    powerups.add(new Powerup(this.x, this.y - this.height, this.width, this.height, 1));
+  }
+
+  public void reset() {
+    hit = false;
+    this.icon = new ImageIcon("Sprites/Bricks/PowerBrick.png");
+  }
+}