docs: add localized star guidance

[alwaysmavs]

Summary

OpenConnector's README did not have a dedicated, restrained prompt for readers who want to support the project with a GitHub star. Adding the prompt too early in the document would interrupt the developer-focused product and setup flow, while leaving it implicit inside the Community section would make its purpose unclear.

This change adds a standalone support section near the end of the README, between Community and Contributors. The placement keeps the main developer journey uninterrupted while giving the star guidance a clear semantic home.

Changes

• add an optimized animated GIF that demonstrates where to star the repository
• add a concise Support OpenConnector section to the English README
• localize the section heading, explanatory copy, image path, and accessible alt text across Simplified Chinese, Traditional Chinese, Japanese, Korean, Russian, and French
• keep the GIF as a non-clickable repository asset because the README is already rendered on the repository page

Validation

• npm run fix-check
• git diff --check
• verified the provider registries remain up to date
• verified the GIF appears once in each README between the Community and Contributors sections

[coderabbitai]

Walkthrough

Added a “Support OpenConnector” section to README.md and six localized README files. Each section encourages readers to star the project on GitHub and displays a centered animated star image. The localized headings and supporting text are translated for French, Japanese, Korean, Russian, Simplified Chinese, and Traditional Chinese documentation.

Possibly related PRs

• oomol-lab/open-connector#12 — Adds overlapping support/star call-to-action sections to the README files.
• oomol-lab/open-connector#203 — Modifies the same README and localized documentation sections.
• oomol-lab/open-connector#31 — Also updates Japanese README localization content.

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title is in the required format and accurately summarizes the localized README star guidance changes.
Description check	✅ Passed	The description clearly matches the PR by explaining the new support section, localization, and validation steps.

✨ Finishing Touches

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch codex/add-star-guidance

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