docs(datanode): add scanbench CLI docs and tidy objbench options (EN/ZH, v1.0)

[evenyag]

Motivation

• Provide documentation for a new scanbench subcommand that benchmarks region scans directly from storage and documents its options and usage.
• Improve readability and formatting of the existing objbench options table and fix the missing newline at end-of-file.

Description

• Adds a scanbench section to docs/reference/command-lines/datanode.md with an options table, scan-config JSON example, explanatory notes, and multiple usage examples including profiling options.
• Mirrors the same scanbench documentation into Chinese localization files under i18n/zh/docusaurus-plugin-content-docs/current/... and i18n/zh/docusaurus-plugin-content-docs/version-1.0/....
• Updates the versioned docs at versioned_docs/version-1.0/reference/command-lines/datanode.md and reformats the objbench options table and EOF newline across modified files.

Testing

• No automated tests were run for this documentation-only change.

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[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the datanode command-line documentation by introducing a new section for the scanbench subcommand. This new documentation provides users with detailed information on how to benchmark region scans directly from storage, including various options and configuration examples. Concurrently, it refines the existing objbench documentation by improving table formatting and addressing minor file integrity issues, ensuring a more consistent and user-friendly experience across all documentation versions and languages.

Highlights

• New scanbench CLI Documentation: Introduced comprehensive documentation for the new scanbench subcommand, detailing its options, scan-config JSON structure, and various usage examples for benchmarking region scans.
• Improved objbench Documentation: Enhanced the readability and formatting of the existing objbench options table.
• Documentation Localization: Mirrored the new scanbench documentation into Chinese localization files for both current and versioned documentation.
• File Formatting Consistency: Addressed and fixed missing newlines at the end of all modified documentation files to ensure consistent formatting.

Changelog

• docs/reference/command-lines/datanode.md
  • Reformatted the objbench options table for improved readability.
  • Added a new scanbench section, including its options, scan-config JSON examples, explanatory notes, and multiple usage examples.
  • Ensured the file ends with a newline.
• i18n/zh/docusaurus-plugin-content-docs/current/reference/command-lines/datanode.md
  • Reformatted the objbench options table.
  • Added the Chinese localized scanbench section with options, scan-config JSON examples, notes, and usage examples.
  • Ensured the file ends with a newline.
• i18n/zh/docusaurus-plugin-content-docs/version-1.0/reference/command-lines/datanode.md
  • Reformatted the objbench options table.
  • Added the Chinese localized scanbench section with options, scan-config JSON examples, notes, and usage examples.
  • Ensured the file ends with a newline.
• versioned_docs/version-1.0/reference/command-lines/datanode.md
  • Reformatted the objbench options table for improved readability.
  • Added a new scanbench section, including its options, scan-config JSON examples, explanatory notes, and multiple usage examples.
  • Ensured the file ends with a newline.

Activity

• No specific activity (comments, reviews, progress) has been recorded for this pull request yet.

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[gemini-code-assist]

Code Review

This pull request adds comprehensive documentation for the new scanbench subcommand and improves the formatting of the existing objbench documentation. The changes are applied consistently across both English and Chinese documents for current and versioned docs. The new documentation is well-structured and provides clear examples. I've made a few suggestions to improve consistency and clarity in the examples and option descriptions. Specifically, I've pointed out a confusing example in the scan-config JSON, an inconsistent path format in one of the command examples, and a minor formatting improvement for placeholders in the English documentation.

_{Note: Security Review has been skipped due to the limited scope of the PR.}