Add Pagination, RateGroup Collections, and Analytics Error Enums

The schema now returns paginated delivery groups through new types DeliveryCarrierCalculatedRateGroupConnection and DeliveryWeightBasedRateGroupConnection. RateGroup fields on option definitions have been replaced with plural rateGroups, using connections for better pagination, and the type signature changed from a non‑null object to a connection. Several error enums received a new value, SHOPIFY_EMPLOYEE_IMPERSONATING, for analytics‑target create, update, and delete operations. The ColumnDataType enum is expanded with CUMULATIVE, GEO_COORDINATE, ENTITY, UNITLESS_SCALAR, and MULTIPLIER. FlowGenerateSignaturePayload now includes a targetUrl field exposing the request‑payload URL. The legacy codeDiscountNode query is deprecated in favor of discountNode. Developers should review updated pagination queries, adapt to the new field names, handle the new error codes, and utilize the added targetUrl for Flow payloads.