* useStoreCartCoupons hook
* Apply coupon w/ basic error handling for the fetch
* Basic store specifically for cart data
* Working on error states
* Show error on coupon fail
* removeCoupon action
* Added extra endpoints for more efficient cart queries
* Apply/remove coupons working
* Track applying/removing state
* StoreCartCoupon typedef
* Use coupon code on index
* Remove custom controls definition
* Adjust storecartcoupons mapper and remove ref
* Move cartData defaults and remove ref
* Call API directly, avoid schema lookup
* Improved selectors
* StoreCart typedef
* Split up cart state data and add more typedefs
* Add API tests for apply/remove coupon
* Jest tests
* Move default cart data to constant
* Comment indentation
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