🔗 feat: Convo Settings via URL Query Params & Mention Models

[danny-avila]

Summary

I added support for conversation settings via URL query parameters, as well as the ability to mention model names directly with the mention command. Previously, the only way to access model names was to select an endpoint first.

• Modified the useEffect hook in useQueryParams with parseQueryValue, processValidSettings, and newQueryConvo functions to parse and validate query parameters against tQueryParamsSchema to process query parameters and set conversation presets based on valid settings.
• Ensured that when assistant_id or agent_id is provided in the URL, the conversation loads with the correct assistant or agent, and the endpoint is set accordingly.
• Also updated localizations and edited default placeholder to bring awareness to mention command to switch Conversation Settings
• Added the ability to mention model names directly with the mention command
• Fixed an issue where agent_id assignment via the mention command was not taking effect.

Closes #1343

Relevant docs: LibreChat-AI/librechat.ai#193

Change Type

• New feature (non-breaking change which adds functionality)

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
• Local unit tests pass with my changes