✨ feat: Add custom fields & role assignment to OpenID strategy

[rubentalstra]

Summary

Closes: #4670
Closes: #4362
Closes: #4354

Docs PR: LibreChat-AI/librechat.ai#205

This PR introduces key improvements to OpenID authentication, and dependency updates. The main enhancements include:

1. OpenID Authentication Enhancements

• Expanded User Schema:
  • Introduced customOpenIdData in the user schema to store provider-specific OpenID Connect attributes.
  • Updated userSchema.js and types.ts accordingly.
• New OpenID Data Mapper:
  • Implemented a structured openidDataMapper.js module to extract custom OpenID attributes dynamically.
  • Added a Microsoft Graph-based data mapper for retrieving extended user data.
• Refactored OpenID Strategy (openidStrategy.js):
  • Improved role extraction with safer JWT decoding using safeDecode().
  • Simplified role-based authentication with extractRolesFromToken().
  • Enhanced avatar update logic by ensuring efficient image fetching and storage.
  • Added support for mapping and persisting additional OpenID attributes.

2. LDAP Integration

• Added support for LDAP authentication, introducing a new ldapId field in the user schema.
• Updated .env.example to include LDAP-specific environment variables.

3. Dependency Updates

• Upgraded openid-client from 5.4.2 to 5.7.1, which is the latest supported version for CommonJS (as v6 is ESM-only).
• Upgraded passport from 0.6.0 to 0.7.0 for improved authentication handling.
• Added @microsoft/microsoft-graph-client to support Microsoft OpenID data mapping.

4. Miscellaneous Improvements

• Improved logging and error handling throughout OpenID authentication.
• Enhanced proxy handling in OpenID requests with HttpsProxyAgent.
• Optimized OpenID provider mapping for better configurability.

Change Type

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

Testing

• Currently, only the Microsoft provider has been tested and is fully working.

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• I have commented any complex areas in my code
• I have updated documentation accordingly
• 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
• A pull request for updating the documentation has been submitted

[rubentalstra]

reference information:
#5612

[rubentalstra]

need some rework ☺️