1.4.0

Included commits: 1.3.3...1.4.0

Improvements

• Introduced GiftCardFacade::addCartCode() to set gift cards to the quote if the code hasn't been added already.
  Introduced GiftCardFacade::removeCartCode() to remove matching applied and not applied gift cards discount from quote.
• Introduced GiftCardFacade::clearCartCodes() to clear all applied and not applied gift card codes from the quote.
• Introduced GiftCardFacade::findOperationResponseMessage() to retrieve success and failed messages.
• Introduced GiftCardCartCodePlugin in Zed layer.