💬feat: Markdown for user messages

[WitnessMee]

Summary

I added Markdown for user messages as requested here #1400 (reply in thread)

Change Type

Please delete any irrelevant options.

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

Testing

All tests in npm run test:client were successful.

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

[NN1985]

Great work. "BetterChatGPT" has had this feature since day one, good to see it come to LibreChat. Does this also include formatted code blocks for user messages?

[danny-avila]

Great work. "BetterChatGPT" has had this feature since day one, good to see it come to LibreChat. Does this also include formatted code blocks for user messages?

Yes. However, this PR doesn't fully cover all cases, and we will be adding a toggle for on/off for those that don't prefer this.