fix: Rotate penguin by 90 deg

as4/as4.cpp

@@ -114,6 +114,13 @@ int main() {
     raylib::Model penguin("models/penguin.glb");
     raylib::Model eagle("models/eagle.glb");
 
+    // vector equation was correct, just has to be rotated 90 degrees to face
+    // the right direction
+    penguin.SetTransform(
+        ((raylib::Transform)penguin.GetTransform())
+            .RotateY(raylib::Degree(90))
+    );
+
     float camYaw = 3.14f; // offset by 90 deg so it faces in the proper direction
     float camPitch = 0;