Add rust-analyzer LSP timing skill sample

[starr-openai]

Summary

• Add skill bundle for rust-analyzer LSP timing experiments under tracked sample skills.
• Includes SKILL.md instructions and three helper scripts:
  • ra_lsp_timing.py
  • ra_lsp_daemon.py
  • ra_lsp_client.py

Testing

• Per request, no cargo checks run for this draft.

Notes

• This is intentionally scoped to the skill artifact only.

[github-actions]

Closing this pull request because it has had no updates for more than 14 days. If you plan to continue working on it, feel free to reopen or open a new PR.