docs: add Chatting Guide

[henryh0x1]

PR Description: This pull request implements the guide documentation for Chatting section

• [x] #1136: Overall guide for chatting
• [x] #1129: Guide for Starting Thread
• [x] #1132: Guide for Manage Chat History

Check-list based on new feedback: In-progress: Not Ready for Review

• Manage Chat History
• [x] Entire GIF in new format (Light mode, clear view)
• [x] Adding missing section managing thread via folders
• [x] Adding missing image/ gif
• Starting a thread
• [ ] Entire GIF in new format (Light mode, clear view)
• [ ] Adding missing section
• [ ] Adding missing image/ gif