PHPStan Extension for Sylius

This PHPStan extension works for both Sylius plugins and Sylius application projects.

The following rules have been implemented:

• Rule to check if resource classes defined either via AbstractGrid::getResourceClass() or the #AsGrid attribute exist
• Rule to check that configured grid fields belong to the configured resource class
• Rule to check that configured filter fields belong to the configured resource class
  • custom filter types are supported
• Rule to check that grid class configured via the Index attribute exists
• Rule to check that form type configured via the AsResource attribute exists

Current assumptions:

• Grids are configured by extending the Sylius\Bundle\GridBundle\Grid\AbstractGrid class