feat: Add better styling

[Wundero]

Various styling improvements should be made to make the app look better.

• Custom favicon to replace the default T3 icon
• Customize landing page to make it a bit less hectic, especially for large amounts of rooms -> perhaps a scrollable container with an infinite scroll with pagination (useInfiniteQuery) would work best
• Improve room styling for smaller screens (collapsible stuff, scrollable containers, idk lol)
• Improve settings page styling for smaller screens (the two sections should be parallel columns instead of vertical stacks)
• Make animations from auto-animate less janky
• Remove flickering for when users join room / refresh page
• Share button on rooms should have tooltip
• QR Code is too large for small screens