* move items to package
* move components to package
* fix dep issue
* pass down classname
* move Panel and Price utils
* expose extensions
* fix import
* move cart call to inside slot
* fix unit tests
* fixes after rebase
* move ShippingRatesControl into packages/checkout
This fixes the `wc-blocks-checkout` circular dependency because `Package` was importing from `@woocommerce/checkout`.
Co-authored-by: Darren Ethier <darren@roughsmootheng.in>
Seghir Nadir