feat: subscription page (#30551)

.changeset/brown-donuts-drive.md

apps/meteor/app/api/server/v1/cloud.ts

apps/meteor/app/cloud/server/functions/getCheckoutUrl.ts

apps/meteor/app/utils/lib/getURL.ts

apps/meteor/app/utils/server/getURL.ts

apps/meteor/client/hooks/useIsEnterprise.ts

apps/meteor/client/hooks/useIsSelfHosted.ts

apps/meteor/client/hooks/useLicense.ts

apps/meteor/client/hooks/useRegistrationStatus.ts

...t/sidebar/header/actions/hooks/useAdministrationItems.tsx

apps/meteor/client/views/admin/cloud/RegisterWorkspace.tsx

...ws/admin/customUserStatus/CustomUserActiveConnections.tsx

.../views/admin/customUserStatus/CustomUserStatusService.tsx

apps/meteor/client/views/admin/info/InformationPage.tsx

.../meteor/client/views/admin/info/UsagePieGraph.stories.tsx

apps/meteor/client/views/admin/routes.tsx

apps/meteor/client/views/admin/sidebarItems.ts

...teor/client/views/admin/subscription/SubscriptionPage.tsx

...ent/views/admin/subscription/SubscriptionPageSkeleton.tsx

...eor/client/views/admin/subscription/SubscriptionRoute.tsx