* Move cart attributes to attributes file
* Stop feedback prompt jumping around; consolodate strings
* Update option labels and descriptions
* Match checkout save function
* hasShippingRate helper
* Refactor full cart/frontend views for shipping calc
* Add hasShippingAddress to useShippingRates hook
* Initial shipping calculator in totals row implementation
* Create cart context
* Update preview data to match API response
* Use context provider for cart
* Provide default cart item for placeholder with correct shape
* Remove outdated shape validation from cartlineitemrow
* Use preview data in editor context
* Tidy up components
* Tests/lint
* Update assets/js/base/components/totals/totals-shipping-item/has-shipping-rate.js
Co-Authored-By: Seghir Nadir <nadir.seghir@gmail.com>
* No need to camel case previewdata
* Use isValidElement
* Implement EditorContext
* Use select if no post is given
Co-authored-by: Seghir Nadir <nadir.seghir@gmail.com>
Mike Jolley