Breaking: #505 - Replace ParserUtility::parseTax by DI 

See Issue 480

Description 

The existing \Extcode\Cart\Utility\ParserUtility::parseTax() uses a TaxClassService which could be configured by a TypoScript Configuration. The change remove the method from the class and injecting the Extcode\Cart\Service\TaxClassServiceInterface by Dependency Injection.

Affected Installations 

All installations where plugin.tx_cart.taxClasses.className is used to replace the default TaxClassService.

Migration 

Remove the old configuration from TypoScript. Add an entry to your Services.yaml or Services.php and configure your implementation of the Extcode\Cart\Service\TaxClassServiceInterface for the $taxClassService constructor argument.