feat: support nested pagination arguments in relay pagination

[jtomaszewski]

Our GraphQL server library ( https://doug-martin.github.io/nestjs-query/docs/graphql/paging/#relation-connections ) uses slightly different format for pagination args: instead of items(first: 2, after: "xyz"), we do items(paging: { first: 2, after: "xyz" }).

Currently relayPagination utility allows only for args to be set at the top-level.

Could we extend it to fit more use cases? In this PR, I'm keeping the exitsing behaviour, but also make it work with pagination args placed under the paging., pagination. or page. object.

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Latest commit: dec3cd1d25742c5cfbb4105a32b27d0137e352dc

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Name	Type
@urql/exchange-graphcache	Minor

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