Get organization plan and usage

Returns the organization's plan tier and billing period alongside its current usage counters: domain and link counts, paid link count, AI spend in microdollars, stored bytes, remaining Pro/Team trial days, the plan's folder limit per domain (null when unlimited), and nextLinkLimitRecalculationAt: the date (YYYY-MM-DD) the yearly link limit is next recalculated, one year after the last recalculation, else after the first payment, else after the organization registration.