Add "first/after" for fetching rawData.variants like in "parents" in GraphQL
When fetching huge amount of rawData.variants there is no way to make it only partial which can result in unneeded big data transfer. For example: in case if you want to display few first items on product card.
This ability was shipped with Litium 8.15.1. Please see the release notes: https://docs.litium.com/platform/change-log/release-notes