Improve benchmark-queries command with new features and refactoring

[tanmay-9]

• Move static methods from BenchmarkQueriesCommand class to module-level functions
• Use the container system from Qleverfile to pretty print the query in pretty_printed_query function.
• Split query text into query name and query description in benchmark result YML file.
• Add benchmark_name and benchmark_description to benchmark result YML file (Priority: CLI args > YAML fields > dataset name fallback)
• Add max_time parameter to run_curl_command in util.py to support server hang detection via curl's --max-time flag
• Add --restart-on-hang option to automatically stop and restart the server when it gets stuck during benchmarking. Additionally, track and report server_restarted status per query
• Add compute_index_stats() to include index time and size in benchmark output
• Avoid mutating args and fix code styling issues
• Update test to use module-level functions instead of class methods