🚀 feat: o1 Tool Calling & reasoning_effort

[danny-avila]

Summary

• Modify ModelEndHandler to dispatch message content when streaming is disabled.
• Implement regex detection for O1 models in createRun and set streaming to false.
• Upgrade @librechat/agents to 1.9.98 for o1 tool calling support.
• Add reasoning_effort model parameter for o1 models

Closes #5318
Closes #5067

Other Changes

• Further optimize thinking content at completion, better match mid-generation elements
• Deprecate Plugins rendering
• Closes [Bug]: Content-Type header causing errors in action requests #5554

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
• My changes do not introduce new warnings