* add various hooks and improve hooks folder structure
- Also restructures hooks directory to make things a bit more organized
- Add useStoreOrder placeholder (followed up in future pull)
- Add useBillingData hook.
* implement usePaymentMethodInterface hook in payment method components
* remove obsolete hooks and implement new checkout context hooks
- add useCheckoutSubmit which exposes checkout submit button interface
- add useCheckoutRedirectUrl which exposes checkout redirect url interface
* add alias for `@woocommerce/base-utils` to jest config
* use consistent variable names for payment method id
* add isEditor to checkotu context and implement in provider usage
* modify configuration expectations for payment method registration api
* update registration of payment methods in demo
* implement new configuration in payment method components
* fix argument order and update jsdocs
Mike Jolley
Darren Ethier