C7-Digital/c7_ledger: admin/README.md

# @c7-digital/admin TypeScript client for the Canton **participant admin** gRPC API. This package wraps a small, read-only subset of the Canton admin API: | Service | RPC | Purpose | |---|---|---| | `ParticipantStatusService` | `ParticipantStatus` | Health + version | | `TrafficControlService` | `Tr