feat(experiments): ClickHouse/SQL experiment infrastructure

[milindsrivastava1997]

Extend the experiment runner (experiment_run_e2e.py-style) to support ClickHouse/SQL experiments, replacing the ad-hoc asap-tools/execution-utilities/benchmark/ pipeline.

Issues

• feat(experiments): ClickHouseService — container lifecycle management #344
• feat(experiments): ClickHouseDataLoaderService — load datasets into ClickHouse #345
• feat(experiments): extend prometheus-client and PrometheusClientService to support SQL/ClickHouse queries #346
• feat(experiments): Hydra config and validation for ClickHouse experiment type #347
• feat(experiments): experiment_run_clickhouse.py — baseline runner #348
• feat(experiments): experiment_run_clickhouse.py — ASAPQuery (sketchdb) mode #349
• feat(experiments): controller ClickHouse label discovery #350
• chore(benchmark): deprecate primitive benchmark pipeline #351