WIP: Add additional Behat features for checkout

[stefandoorn]

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[stefandoorn]

@Zales0123, any clue why this transformer is not performing on the 'number' + 'addition' field? Also want to make 'addition' optional, but that's a later issue.

[Zales0123]

There are some missing quotation marks in this line, it should be @Transform /^address extended (?:as |is |to )"([^"]+)", "([^"]+)", "([^"]+)", "([^"]+)", "([^"]+)", "([^"]+)" for "([^"]+)"$/ 💃