Add onError function to Query/Mutation Options

[ogaclejapan]

The onError callback function is useful for error logging reporting and feedback you commonly want to handle on the client.

SwrCache(
    policy = SwrCachePolicy(
        ..
        queryOptions = QueryOptions(
            onError = { err, query, id -> 
                logger.error(err, "Query error: $query, id: $id")
            }
        ),
    )
)