title	issue	author	author_email	author_github
Added cross-selling import-export profile	NEXT-16042	d.neustadt	d.neustadt@shopware.com	dneustadt

Core

Added migration for cross-selling import/export profile
Added ProductCrossSellingSerializer for resolving assigned products from string
Changed custom id conversion to be included in deserialization through FieldSerializer

Administration

Added specific resolver for one-to-many assignedProducts field of product_cross_selling in field mapping