feat(data): add Ray ClickHouse write binding

[Chang-Tong]

Summary

• add an append-only Ray Data ClickHouse write binding backed by the public ray-clickhouse facade
• use canonical credential-free targets and env credential references
• validate native write receipts and register the target only for ray-clickhouse 0.1.0
• document support and usage

Architecture

This keeps ClickHouse transport in the connector, lifecycle and contracts in Tributo Core, and application policy outside Core.

Validation

• Ruff format and lint
• mypy on 302 source files
• 68 targeted data and inference tests
• git diff check

The full local Python 3.12 precheck is additionally blocked by a reproducible unrelated local SciPy binary load failure that also occurs on a clean upstream checkout.