feat: add traceAllBodies method

packages/pinball_components/sandbox/lib/common/trace.dart

@@ -17,3 +17,13 @@ extension BodyTrace on BodyComponent {
     );
   }
 }
+
+extension Forge2DGameTrace on Forge2DGame {
+  void traceAllBodies({
+    Color color = const Color(0xFFFF0000),
+  }) {
+    for (final bodyComponent in children.whereType<BodyComponent>()) {
+      bodyComponent.trace(color: color);
+    }
+  }
+}