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/Collidable.java

@@ -0,0 +1,30 @@
+import java.awt.Graphics;
+import java.awt.Rectangle;
+import javax.swing.ImageIcon;
+
+public class Collidable extends Sprite {
+  int x, y, width, height;
+  Rectangle rect;
+
+  public Collidable(int x1, int y1, int w, int h, ImageIcon icon) {
+    super(icon);
+    x = x1;
+    y = y1;
+    width = w;
+    height = h;
+    rect = new Rectangle(x1, y1, w, h);
+  }
+
+  public void draw(Graphics g) {
+    sprite = icon.getImage();
+    g.drawImage(sprite, x, y, width, height, null);
+  }
+
+  public boolean collidesWith(Collidable other) {
+    return this.rect.intersects(other.rect);
+  }
+
+  public void onCollide(Collidable other) {
+    return;
+  }
+}