* Add back icon
* Add cart URL constant
* Add button components
* Implement button components into checkout
* Update checkout styles to match mockup incl updates to margins and padding
* Add options to control return to cart link
* Use checkout context
* Update snapshot
* Update context
* href
* Color/arrow styling
* Implement select instead of open URL field
* Add notice and updated settings control
* Show notice conditonally
* Store permalinks to avoid extra API requests, and get pages via API
* Update snapshots
* Fix double layout conflict
* Switch back to ID and add permalink via block setting
* snaps
* Fix snapshot; add default shape for pages
* Feedback
* Better undefined handling
* Update assets/js/blocks/cart-checkout/checkout/block.js
Co-Authored-By: Darren Ethier <darren@roughsmootheng.in>
Co-authored-by: Darren Ethier <darren@roughsmootheng.in>