Add `fragmentMatcher` support in GraphQL helper cacheConfig

What does this MR do?

Adds support for providing fragmentMatcher within cacheConfig via introspectionQueryResultData JSON file. Learn more about the topic in https://www.apollographql.com/docs/react/advanced/fragments/#fragments-on-unions-and-interfaces.

Conformity

• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides