* Remove i2 from build
* Remove i2 php registration
* Rename old checkout dir
* Rename i2 dir
* Migrate i1 to i2 code
* Register block metadata to fix frontend rendering when migrating to i2
* Register in correct order
* Missing styles
* add register-components to side effectful list
* wrong block class in e2e test
* wp prefix missing on selector
* Fix top level block test
* Reselect labels to work around rerendering
* missing empty cart styles
* Consolodate duplicate styles
* remove init code
* update selectBlockByName
Co-authored-by: Nadir Seghir <nadir.seghir@gmail.com>
* Add several tests to Checkout block in the editor
* Avoid 'visibility' word for toToggleElement rule
* Refactor matchers so they receives the label instead of the text
* Make initial 'isRequired' optional
* Refactor code that produces two clicks to DRY
* Unify error messages
Mike Jolley
Albert Juhé Lluveras