Nav Menu Upgrades and Minor UX Improvements

[MythicalCow]

Change List 🔨

• Converted navigation menu into a dropdown menu
• Moved collapsed side panel menu icons into top row
• Auto refresh when conversation is deleted to update side panel and route back to main page if deletion is on current conversation
• Highlight the current conversation in the side panel
• Dynamic homepage messages with current day and time of day.
• colorutils upgraded to have more expansive tailwind color options and dynamic class name generation.
• Converted create agent button alert into shadcn ToolTip
• Colored lines and icons for agents in chat window
• Cleaned up border styling in dark mode
• fixed three dot menu in side panel to be more easier to click

Image 🖼️

Feedback 🤝

• Design comments
• Flow between pages
• Bugs and edge case testing