🚀 feat: Add Cloudflare Turnstile support

[rubentalstra]

Summary

Closes: #4047
Docs: LibreChat-AI/librechat.ai#245

This pull request introduces several changes to the AppService and its associated test files to include the new turnstileConfig and improve the overall configuration handling. The most important changes include adding the turnstileConfig to the application's local variables, updating the service initialization, and expanding the test coverage to mock and verify the new configuration.

Cloudflare:

• https://developers.cloudflare.com/turnstile/community-resources/
• https://github.com/marsidev/react-turnstile

Configuration Updates:

• Added turnstileConfig to the application locals in AppService (api/server/routes/config.js, api/server/services/AppService.js). [1] [2] [3] [4]

Test Enhancements:

• Expanded the test mocks to include turnstileConfig and other configuration checks in AppService.spec.js (api/server/services/AppService.spec.js). [1] [2] [3]
• Added tests to verify the correct assignment of turnstileConfig and other configurations in AppService.spec.js (api/server/services/AppService.spec.js). [1] [2] [3]

These changes ensure that the turnstileConfig is properly loaded and available throughout the application, and that the new configuration is thoroughly tested.

Change Type

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Testing

Please describe your test process and include instructions so that we can reproduce your test. If there are any important variables for your testing configuration, list them here.

Test Configuration:

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• I have commented in any complex areas of my code
• My changes do not introduce new warnings
• I have written tests demonstrating that my changes are effective or that my feature works
• Local unit tests pass with my changes
• Any changes dependent on mine have been merged and published in downstream modules.
• A pull request for updating the documentation has been submitted.

[github-actions]

🚨 Unused NPM Packages Detected

The following unused dependencies were found:

📂 Client client/package.json

• @marsidev/react-turnstile

⚠️ Please remove these unused dependencies to keep your project clean.

[rubentalstra]

no 🙃 need it later in the code.

[rubentalstra]

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