feature/core-908-rest-api [ci skip] api pre processors refactoring, added Processor, PreProcessorProvider,  ApiPostProcessorPluginInterface, ApiPreProcessorPluginInterface, cleanups
feature/core-908-rest-api [ci skip] api pre processors refactoring, added Processor, PreProcessorProvider,  ApiPostProcessorPluginInterface, ApiPreProcessorPluginInterface, cleanups

spryker/demoshop,spryker/demoshop,spryker/demoshop,spryker/demoshop