✨ add Bundle dequeue() and when() methods

[QWp6t]

You can now dequeue and conditionally load bundles.

// directly pass boolean value
bundle('shop')->when(is_shop())->enqueue();

// pass named function to be resolved
bundle('shop')->when('is_shop')->enqueue();

// pass closure to be resolved
bundle('shop')->when(fn () => is_shop())->enqueue();

bundle('shop')->enqueue();

// o nvm i changed my mind

bundle('shop')->dequeue();

closes #196