feat: define AnalyticsServiceLevel and AnalyticsPropertyType enums in resources.proto
feat: update OAuth scopes in marketingplatformadmin_v1alpha.yaml
feat: add the `ListOrganizationsRequest` and `ListOrganizationsResponse` resources
feat: add the `FindSalesPartnerManagedClientsRequest` and `FindSalesPartnerManagedClientsResponse` resources
feat: add the `ReportPropertyUsageRequest` and `ReportPropertyUsageResponse` resources
PiperOrigin-RevId: 826146529
An update to Go gRPC Protobuf generation will change service registration function signatures to use an interface instead of a concrete type in generated .pb.go service files. This change should affect very few client library users. See release notes advisories in https://github.com/googleapis/google-cloud-go/pull/11025.
PiperOrigin-RevId: 754988866
