Improve JSON Report for ClickHouse Benchmark

Why it matters

The improvement aims to offer users better insights and easier parsing of benchmark results generated by clickhouse-benchmark. This helps in performance analysis and comparison by making the benchmark reports more comprehensive and readable in JSON format.

How to use it

Run the clickhouse-benchmark tool as usual. The JSON report output format has been improved automatically, requiring no additional configuration or parameters from the user. Simply use the tool's existing JSON output option to benefit from the enhanced report.